Question

$(a2 -b 2)2 + 4a2b2$
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Answer 1

Step-by-step explanation:

(a²-b²)²+4a²²

a^4+b4-2a²b²+4a²b²

a^4+b^4+2a²b²

(a²+b²)²

(a²+b²)(a²+b²)

hipe it helps

thanx

Answer 2

LET'S TAKE a AND b AS x AND y RESPECTIVELY.

${( {x}^{2} - {y}^{2} ) }^{2} + 4 {x}^{2} {y}^{2}$

${(x - y)}^{2} = {x}^{2} + {y}^{2} - 2xy$

${ ({x}^{2} )}^{2} + { ({y}^{2} )}^{2} - 2( {x}^{2} )( {y}^{2} )$

${x}^{4} + {y}^{4} - 2 {x}^{2} {y}^{2} + 4 {x}^{2} {y}^{2}$

${x}^{4} + {y}^{4} + 2 {x}^{2} {y}^{2}$

Hope it helps you out.....