Question

a)x(x+2)=4x
b) (x-2)^2+4x=4

Answer 1

a) x²+2x= 4x
x²+2x-4x=0
x²-2x=0
x(x-2)=0.
x-2=0.
x=2

x1=0
x2=2

b) x²-4x+4+4x=4. x²+4=4 x²=4-4. x²=0
x=0