Sagot :
bjr
A=5x-x- 11x+4x = 5x + 4x - x - 11x = 9x - 12x = -3x
B=5x+2y-6x+3Y = 5x - 6x + 2x + 3y = -x + 5y
C=4x*5x = 4*5*x*x = 20x²
D=-7x*6 = -42x
E=-7x*(-6x) = -7*(-6) *x*x = 42x²
F=8x-(3-x) = 7x - 3 + x = 7x + x - 3 = 8x - 3
G=5x+(2-3x)-(x-3) = 5x + 2 - 3x - x + 3 = 4x - 3x - x + 2 + 3 = 5
H=4/3 x*(-16/9) = 4/3*(-16/9) x = (-16*4) / (3*9) x = -64/27x