6. Multiply :
(i) 8x - 7 by 8x +7
Answers
Answered by
5
Step-by-step explanation:
(8x-7)×(8×+7)
(a+b)×(a-b)= a^2-b^2
=(8×)^2-(7)2
=64×^2-49
Answered by
2
(8x-7)(8x+7)
8x(8x+7)-7(8x+7)
64x^2+56x-56x-49
64x^2-49
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