Question

(a - b)² - (a + b)²
ab² - a²b

ajudem pfvr

Answer 1

$(a - b)^{2} - (a + b)^{2} = ( {a}^{2} - 2ab + {b}^{2} ) - ( {a}^{2} + 2.ab + {b}^{2} ) = 0 \\ a {b}^{2} - {a}^{2}b = ab.(b) - ab.(a)$