Question

simplify :-
$( {a}^{2} - { {b}^{2} })^{2}$
​

Answer 1

Step-by-step explanat

Using,

(a−b) 2=a 2−2ab+b 2

we get

=(a 2) 2−2(a 2)(b 2 )+(b 2 ) 2=a

4−2a 2b 2+b 4

Answer 2

$(a { }^{2} - b {}^{2} ) {}^{2} \\ \\ = (a {}^{2} ) {}^{2} - 2.a {}^{2} .b {}^{2} + (b {}^{2} ) {}^{2} \\ \\ = a {}^{4} - 2a {}^{2} b {}^{2} + b {}^{4}$