X^2-2x-3=4x-4 помогите

Question

X^2-2x-3=4x-4 помогите

Answer 1

X^2-2x-3=4x-4   
x²-2x-3-4x+4=0
x²-6x+1=0
D=6²-4*1=36-4=32   √D=√32=√4*8=2√4*2=4√2
x1=1/2[6-4√2]=3-2√2    x2=1/2[6+4√2]=3+2√2