Sagot :
Bonjour,
A= (2-3* 9)² + (-2*3 +1) ( 2-3*3)
=(2 -27)² + (-6+1) ( 2-9)
= - 25² - 5 * -7
= 625 + 35
= 655
Bonjour,
A = (2-3x)²+(-2x+1)(2-3x)
A = (2-3×3)²+(-2×3+1)(2-3×3)
A = (2-9)²+(-2×3+1)(2-3×3)
A = (2-9)²+(-6+1)(2-3×3)
A = (2-9)²+(-6+1)(2-9)
A = (-7)²+(-6+1)(2-9)
A = (-7)²-5(2-9)
A = (-7)²-5(-7)
A = 49-5(-7)
A = 49+35
A = 84
Bonne journée.