SASA971
Answered

Aider mer SVP: Développer réduire et ordonner ler expressions suivantes : A= 12x² - 9x + 5 - 8x² - 3x -15 B= 3 (2y - 1) - (5y - 4 ) C= (3z + 2 ).(z - 3)

Sagot :

SULKY
Bonsoir,

A = 12x² - 9x + 5 - 8x² - 3x - 15
A = 4x² - 12x - 10

B = 3(2y - 1) - (5y - 4)
B = 6y - 3 - 5y + 4
B = y + 1

C = (3z + 2)(z - 3)
C = 3z² - 9z + 2z - 6
C = 3z² - 7z - 6
LOULAKAR
Bonsoir,

A = 12x^2 - 8x^2 - 9x - 3x + 5 - 15
A = 4x^2 - 12x - 10

B = 3(2y - 1) - (5y - 4)
B = 6y - 3 - 5y + 4
B = y + 1

C = (3z + 2)(z - 3)
C = 3z^2 - 9z + 2z - 6
C = 3z^2 - 7z - 6