IV
Find the product of (x + 7y) and (7x - y)
(a) 7x2 + 48xy – 7y (b) -7x2 + 48xy + 7y?
(c) 7x- 48xy – 7y2 (d) 7x2 - 48xy - 7y?
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Answers
Answered by
2
Step-by-step explanation:
Step 1: Multiply the first term of each binomial together.
(2x)(3x) = 6x2
Step 2: Multiply the outer terms together.
(2x)(–1) = –2x
Answered by
0
Answer:
(x + 7y) and (7x - y)
= (x + 7y) (7x – y)
= x(7x-y) + 7y ( 7x-y)
=7x2 – xy + 49xy – 7y2
= 7x2 – 7y2 + 48xy
a) 7x2 + 48xy – 7y
=7x2 + 48xy-7y2
=7x2 + 49xy-xy-7y2
=7x(x + 7y)-y(x + 7y)
=(7x-y)(x + 7y)
∴ the factors of 7x2 + 48xy-7y2 are (7x-y)(x + 7y)
Step-by-step explanation:
i'm sorry bro or/ sis but i only know that much:(
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