Question

(7a elevado a la 2 b - 2ab elevado a la 2)elevado a la 2

Answer 1

$(7 a^{2} b-2a b^{2} )^{2} = (7 a^{2}b)^{2} -2(7 a^{2}b)(2a b^{2})+(2a b^{2}) ^{2}$

$49 a^{4} b^{2} -28 a^{3} b^{3} + 49 a^{2} b^{4}$