20. What should be taken away from the sum of (9p - 2qr) and (7p+3qr + 4r) to get the product of 4r and
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Answer:
Step-by-step explanation:
Find the product of the following pairs of monomials.
(i) 4, 7p
Answer:
4
×
7
p
=
28
p
(ii) – 4p, 7p
Answer:
−
4
p
×
7
p
=
−
28
p
2
(iii) – 4p, 7pq
Answer:
−
4
p
×
7
p
q
=
−
28
p
2
q
(iv)
4
p
3
, – 3p
Answer:
4
p
3
q
×
−
3
p
=
−
12
p
4
q
(v) 4p, 0
Answer:
4
p
×
0
=
0
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