Question

Solve using identities. (5/2a-b)(5/2a-b) Please answer fast
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Answer 1

Answer:

Answer:The identity used is (x-y)² = x²+y²-2xyStep-by-step explanation:(5/2a-b)² = (5/2a²) + b² - 2x(5/2a)xb= 25/4a² + b² - 5abHope this ...

Answer 2

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(2/a+5/b)(2a+5/b)

= (2/a+5/13)²

= (2/a)² +2(2/a)(5/b)+(5/b)²

[Using, (a+b)² =a ² +2ab+b² ]

= 4/a² +20a/b+25/b²