Réponse :
Explications étape par étape
Bonjour
Developper puis réduire
A = 3(x - 2) + 5(3 - x)
A = 3x - 6 + 15 - 5x
A = -2x + 9
B = x(3 + x) - 2(x + 5)
B = 3x + x^2 - 2x - 10
B = x^2 + x - 10
C = -2(x - 7) - 2(x^2 + x) + 4(x^2 + 1)
C = -2x + 14 - 2x^2 - 2x + 4x^2 + 4
C = 2x^2 - 4x + 18
D = 2x(-x + 5) - x^2(1 - x)
D = -2x^2 + 10x - x^2 + x^3
D = x^3 - 3x^2 + 10x
E = -6x(2x^2 - 3x) - 3(x + 4x^2) - x(-3 + 4x)
E = -12x^3 + 18x^2 - 3x - 12x^2 + 3x - 4x^2
E = -12x^3 + 2x^2
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Réponse :
Explications étape par étape
Bonjour
Developper puis réduire
A = 3(x - 2) + 5(3 - x)
A = 3x - 6 + 15 - 5x
A = -2x + 9
B = x(3 + x) - 2(x + 5)
B = 3x + x^2 - 2x - 10
B = x^2 + x - 10
C = -2(x - 7) - 2(x^2 + x) + 4(x^2 + 1)
C = -2x + 14 - 2x^2 - 2x + 4x^2 + 4
C = 2x^2 - 4x + 18
D = 2x(-x + 5) - x^2(1 - x)
D = -2x^2 + 10x - x^2 + x^3
D = x^3 - 3x^2 + 10x
E = -6x(2x^2 - 3x) - 3(x + 4x^2) - x(-3 + 4x)
E = -12x^3 + 18x^2 - 3x - 12x^2 + 3x - 4x^2
E = -12x^3 + 2x^2