(2а-7) (2a-7) simply using identitiea
Answers
Answered by
2
Answer:
Answer-(2a)^2-(7)^2
the identity formula is a^2-b^2
Hope it helps you
Answered by
0
Answer:
(2a-7)(2a-7)
=(2a-7)²
=(2a)²+(7)²-2X2aX7
=4a²-28a+49
I'd used=(a-b)²=a²+b²-2ab
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