Question

-2(x+3,5)=0
c(5-c)=0
4(y+2)(3-y)(y-6)=0

Answer 1

-2(x+3.5)=0 -2x -7 = 0 2x=-7 x=-3.5 Ответ: х=-3.5 c(5-c)=0 c=0, 5-c=0 Ответ: c=0, c=5 4(y+2)(3-y)(y-6)=0 y+2=0, 3-y=0, y-6=0 Ответ: y=-2, y=3, y=6