Question

(x2 + x - 2)(x2 - x + 2)
$x {?}^{2}$
​

Answer 1

Answer:

$=x^{4} +4x-4$

Step-by-step explanation:

$(x^{2} +x-2)(x^{2} -x +2)\\= x^{2} (x^{2} -x+2)+x(x^{2} -x+2)-2(x^{2} -x+2)\\=x^{4} - x^{3} +2x^{2} + x^{3} -x^{2} +2x-2x^{2} +2x-4\\= x^{4}- x^{3}+ x^{3}+2x^{2}-2x^{2} +2x+2x-4\\=x^{4} +4x-4$

Answer 2

I don't know what is the answer of this question