(a²+b²)² evaluate each of the following using appropriate identities
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(a²+b²)²
(a²)²+(b²)²+2(a²)(b²). [ (a+b)²=a²+b²+2ab] [ (a^m)ⁿ=a^mn]
=a⁴+b⁴+2a²b²
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