find the product using identity (x²+x²/2)²
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its simple to answer (x²+x²/2)²
let x²=a. and x²/2= b
(a+b)²=a²+b²+2ab
=(x²)²+(x²/2)²+2x²*x²/2
= (x²)²+(x²)²/4+(x²)²
=2(x²)²+(x²)²/4
=(8(x²)²+(x²)²)/4
=9(x²)²/4
another method:
= (x²+x²/2)²
=((2x²+x²)/2)²
=(3(x²))²/4
=9(x²)²/4
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