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Lonnna
@Lonnna
April 2019
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A=5*(6x)+x*(2x). B=3x*(-2x)-5x*8x. C=-8y*2y-(-3)*7y+9y*(-4). D= -11t*(3t)-(2)*(-5t au carré )+3t*(-9t). Merci pour votre aide
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maudmarine
Verified answer
A = 5 * (6x) + x * (2x)
A = 30x + 2x²
A= 2x² + 30x
B = 3x * (- 2x) - 5x * 8x
B = - 6x² - 40x
C = - 8y * 2y - (- 3) * 7y + 9y * (- 4)
C = - 16y² + 21y - 36y
C = - 16y² - 15y
D = - 11t * (3t) - (2) * (- 5t²) + 3t * (- 9t)
D = - 33t² + 10t² - 27t²
D = - 50t²
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Verified answer
A = 5 * (6x) + x * (2x)A = 30x + 2x²
A= 2x² + 30x
B = 3x * (- 2x) - 5x * 8x
B = - 6x² - 40x
C = - 8y * 2y - (- 3) * 7y + 9y * (- 4)
C = - 16y² + 21y - 36y
C = - 16y² - 15y
D = - 11t * (3t) - (2) * (- 5t²) + 3t * (- 9t)
D = - 33t² + 10t² - 27t²
D = - 50t²