Bonjour
Sachant que x=4 et que Y=-2 calculer les expressions suivantes
A=4(X-Y)
A = 4 (4 - (- 2))
A = 4 (4 + 2)
A = 4 * 6
A = 24
B=3X + 2Y
B = 3 * 4 + 2 * (- 2)
B = 12 - 4
B = 8
C=-5 X² + 7y-6
C = - 5 * 4² + 7 * (- 2) - 6
C = - 5 * 8 - 14 - 6
C = - 40 - 20
C = - 60
D= (4 y²+1)(1-8XY)
D = (4 * 4² + 1) (1 - 8 * 4 * - 2)
D = (4 * 16 + 1) (1 - 32 * - 2)
D = (64 + 1) (1 + 64)
D = 65 * 65
D = 4 225.
