plz help:
(4x+7)²-(4x-7)² ( answer is 112x)
with explanation plz....
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(4x+7)²-(4x-7)²
a²-b²= (a+b)(a-b)
a = 4x+7
b = 4x-7
= (4x+7+4x-7){4x+7-(4x-7)}
= 8x {4x+7-4x+7}
= 8x × 7+7
= 8x×14
= 112x
please mark brainliest
a²-b²= (a+b)(a-b)
a = 4x+7
b = 4x-7
= (4x+7+4x-7){4x+7-(4x-7)}
= 8x {4x+7-4x+7}
= 8x × 7+7
= 8x×14
= 112x
please mark brainliest
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