Question

factorizar: a4 + a2b2 + a2c2 + b2c2

Answer 1

$Se\ tiene\ \\ a^{4} + a^{2} b^{2} +a^{2} c^{2}+b^{2} c^{2} \\ a^{2} (a^{2} +b^{2})+c^{2} (a^{2} +b^{2}) \\ (a^{2} +c^{2})(a^{2} +b^{2})$