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1. ชื่อ......................................................................เลขที..................ชั้น.............
ใบงานที่ 1 เรื่อง การบวกลบคูณหารพหุนาม (ครูทับทิม เจริญตา)
คาสั่ง จงหาผลคูณและผลหารของพหุนามต่อไปนี้
1. a3
(a2
– 3b) = ____________________________________________________________________
2. (–9x)(–12xy + 5) = ____________________________________________________________________
= ____________________________________________________________________
3. (–ab)(–ab + 4) = ____________________________________________________________________
= ____________________________________________________________________
4. (–6pq)(3p + 4q) = ____________________________________________________________________
= ____________________________________________________________________
5. (4mn)(5m2
n + 6mn2
) = ____________________________________________________________________
= ____________________________________________________________________
6. (–5st3
)(4st – 6s2
t2
) = ____________________________________________________________________
= ____________________________________________________________________
7. (3x2
+ 5x + 7)(–6x) = ____________________________________________________________________
= ____________________________________________________________________
8. (–8pq3
)(6p3
– 5q + 1) = ____________________________________________________________________
= ____________________________________________________________________
9. (–a)(a2
+ 3a – 4) = ____________________________________________________________________
= ____________________________________________________________________
10. (7x + 9y – 11z)(–3x) = ____________________________________________________________________
= ____________________________________________________________________
11.18x5
÷ 9 = _________________________________________________________________
= _________________________________________________________________
12. 5a3
b ÷ 20ab = _________________________________________________________________
= _________________________________________________________________
13.(–13p5
q3
) ÷ (–13p2
q) = _________________________________________________________________
= _________________________________________________________________

2. 14.(–30m4
n4
) ÷ 5mn3
= _________________________________________________________________
= _________________________________________________________________
15. 144x4
y2
) ÷ (–12x2
y2
) = _________________________________________________________________
= _________________________________________________________________
16. (– xy2
z3
) ÷ (– xyz) = _________________________________________________________________
= _________________________________________________________________
17.32a5
b5
c5
÷ (–4a3
b2
c) = _________________________________________________________________
= _________________________________________________________________
18.4x2
yz5
÷ (–8xyz3
) = _________________________________________________________________
= _________________________________________________________________
19.p5
q3
r7
÷ (–4pq2
r5
) = _________________________________________________________________
= _________________________________________________________________
20. 51x7
y9
÷ (–17xy5
) = _________________________________________________________________
_________________________________________________________________
(–15ab4
+ 3a2
b2
– 21b3
) ÷ 3b2
= ________________________________________________________
= ________________________________________________________
= ________________________________________________________
21.(–a2
+ 4a5
– 2a) ÷ 2a = ________________________________________________________
= ________________________________________________________
= ________________________________________________________
22.(12x3
y – 28x4
y2
+ 36x2
y4
) ÷ (–4xy) = ________________________________________________________
= ________________________________________________________
= ________________________________________________________
23.(–24a7
b3
+ 18a7
b) ÷ (–6a7
b) = ________________________________________________________
= ________________________________________________________
= ________________________________________________________
24.(–15x3
y2
– 15x4
y3
) ÷ (–15x3
y2
) = ________________________________________________________
= ________________________________________________________
= ________________________________________________________
25. = ________________________________________________________
= ________________________________________________________
3
5
5
3
–2m2
n2
–7m4
n2
+ 6m3
n3
– 2m2
n4

3. = ________________________________________________________
26. = ________________________________________________________
= ________________________________________________________
= ________________________________________________________
27. = ________________________________________________________
= ________________________________________________________
= ________________________________________________________
28. = ________________________________________________________
= ________________________________________________________
= ________________________________________________________
29. = ________________________________________________________
= ________________________________________________________
5p2
5p2
– 35p2
q3
– 20p6
–9x3
y2
27x4
y2
– 18x3
y3
– 36x4
y5
5y4
15y4
+ 5y7
– 25y5
–pq
pq – 9p3
q2
+ 3pq5