Question

Find the product of the following
(-4a+7b) and (4a+7b)​

Answer 1

Answer:

$= > \: ( - 4a + 7b) \times (4a + 7b) \\ \\ = > - 4a(4a + 7b) + 7b(4a + 7b) \\ \\ = > - 16 {a}^{2} - 28ab + 28ab + 7 {b}^{2} \\ \\ = > - 16 {a}^{2} + 7 {b}^{2}$

Step-by-step explanation:

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Answer 2

Answer:

-16 a^2 +7b^2

it is the answer..

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