Simplify- (a²-b²)² and tell the identity you use.
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Step-by-step explanation:
(a²-b²)² where a=a², b=b²
(a²-b²)²= (a²)²-2(a²)(b²)+(b²)²
= a⁴-2a²b²+b⁴
Identity: (a-b)²=a²-2ab-b²
Hope it helps!!
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