(5/2a-b)² using identity
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Answered by
2
Answer:
The identity used is (x-y)² = x²+y²-2xy
Step-by-step explanation:
(5/2a-b)²
= (5/2a²) + b² - 2x(5/2a)xb
= 25/4a² + b² - 5ab
Hope this helps!
Answered by
1
Answer:
(5/2a-b)²=25/(2a-b)²
=25/(2a)²-2.2a.b +b²
=25/4a²-4ab+b²
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