Réponse :
Explications étape par étape
Bonjour
(2x)^2 = 4x^2
(-3x)^2 = 9x^2
-(3x)^2 = -9x^2
(-x^2)^2 = x^(2*2) = x^4
(5x^2)^2 = 5x^(2*2) = 25x^4
-(-7x)^2 = -49x^2
(2x^3)^2 = 4x^(3*2) = 4x^6
(-5x^4)^2 = 25x^(4*2) = 25x^8
(-3x^3)^2 = 9x^(3*2) = 9x^6
-2(3x^2)^2 = -2 * 9x^(2*2) = -18x^4
