<span>2(x + 2) - 5(2 - x) - (5 + 2)x - 1 = 2х + 4 - 10 + 5х - 7х - 1 = -7</span>
A) 3b(c-2x)
B) 3y(y-4)
C) 5x2y2(x-9y)
D) 3c(c3-4ac+2)
3х(4х-1)-2х(4х+5)=12х^2 - 3x -8x^2 -10x =4x^2-13x
Х+0,81=0,7. 0,073х=7,3
х=0,7-0,81. х=100
х=-0,11
0,95-у=2
-у=2-0,95
-у=1,05
у=-1,05