Question

find roots of equation​

Answer 1

Answer:

${x}^{4} - 2 {a}^{2} {x}^{2} + {a}^{4} = 0 \\ { {(x}^{2}) }^{2} - 2 {a}^{2} {x}^{2} + {( {a}^{2} )}^{2} = 0 \\ {( {x}^{2} - {a}^{2} )}^{2} = 0 \\ {x}^{2} - {a}^{2} = 0 \\ (x - a)(x + a) = 0 \\ x = a \: or \: x = - a$

Answer 2

Answer:

this is correct.......................