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Sagot :

VINS

Réponse :

bonjour

[tex]A = ( 4 x - 7 ) ( x + 8) \\A = 4 x^{2} + 32 x - 7 x - 56 \\A = 4 x^{2} + 25 x - 56 \\\\C = ( 5 x - 2 ) ( - 2 x - 1 ) \\C = - 10 x^{2} - 5 x + 4 x + 2 \\C = - 10 x^{2} - x + 2 \\\\B = ( - 2 x + 3 ) ( x + 2 ) \\B = - 2 x^{2} - 4 x + 3 x + 6 \\B = - 2 x^{2} - x + 6 \\\\D = ( 3 x - 5 )^{2} \\D = 9 x^{2} - 30 x + 25 \\\\[/tex]

Explications étape par étape

bonjour

A= (4x-7)(x+8)

4x²+32x-7x-56

4x²+25x-56

C= (5x-2)(-2x - 1)

-10x²-5x+4x+2

-10x²-x+2

B= (-2x + 3)(x + 2)

-2x²-4x+3x+6

-2x²-x+6

D= (3x - 5)²

9x²-30x+25

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