Решите уравнения:

(-4x) + x-4=0

(+7x) - 4x-28=0

5-10x + (x-2) = 0

3+12x - (x+4) = 0

(x²-4x) + x-4=0

x (x-4) + (x-4) = 0

(x-4) (x+1) = 0

x-4=0 x+1=0

x=4 x=-1

(x²+7x) - 4x-28=0

x (x+7) - 4 (x+7) = 0

(x+7) (x-4) = 0

x+7=0 x-4=0

x=-7 x=4

5x²-10x + (x-2) = 0

5x (x-2) + (x-2) = 0

(x-2) (5x+1)

x-2=0 5x+1=0

x=2 5x=-1

x=-1/5

3x²+12x - (x+4) = 0

3x (x+4) - (x+4) = 0

(x+4) (3x-1) = 0

x+4=0 3x-1=0

x=-4 3x=1

x=1/3