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Développer et réduire les expressions suivantes
A = 3x + 1)(x - 5)
B = 2(-3 - t)(t-7)
C = -(y + 5)(3y - 6)
D = x(2x - 5)(2 - x)
Aidez moi svp

Sagot :

MAUDMARINE

Bonjour

Développer et réduire les expressions suivantes

A = 3x + 1)(x - 5)

A = 3x² - 15x + x - 5

A = 3x² - 14x - 5

B = 2(-3 - t)(t-7)

B = 2 (- 3t + 21 - t² + 7t)

B = - 6t + 42 - 2t² + 14t

B = - 2t² + 8t + 42

C = -(y + 5)(3y - 6)

C = - (3y² - 6y + 15y - 30)

C = - 3y² + 6y - 15y + 30

C = - 3y² - 9y + 30

D = x(2x - 5)(2 - x)

D = x (4x - 2x² - 10 + 5x)

D = 4x² - 2x³ - 10x + 5x²

D = - 2x³ + 9x² - 10x.

MARGESIMPSON1

Bjr

A = (3x+1)(x-5)

A = 3x²-15x+x-5

A = 3x²-14x-5

B = 2(-3-t)(t-7)

B = 2(-3t+21-t²+7t)

B = -6t+42-2t²+14t

B = -2t²+8t+42

C = -(y+5)(3y-6)

C = -(3y²-6y+15y-30)

C = -3y²+6y-15y+30

C = -3y²-9y+30

D = x(2x-5)(2-x)

D = x(4x-2x²-10+5x)

D = 4x²-2x³-10x+5x²

D = -2x³+9x²-10x

Petit conseil relisez vos leçons.

Bonne journée.