Question

(x+b) (x-b) (x^2+b^2) (x^4+b^4)+b^8-x^8

Answer 1

$(x+b)(x-b)( x^{2} + b^{2} )( x^{4} |+ b^{4} )+x^{8} - b^{8}$

$(x^{2} - b^{2} )( x^{2} + b^{2} )( x^{4} + b^{4} )+x^{8} - b^{8}$

$(x^4 - b^{4} )( x^{4} + b^{4} )+x^{8} - b^{8}$

$x^8 - b^{8} +x^{8} - b^{8}$

$2x^{8} - 2b^{2}$