5x+2=3x^2
[x-2][3x-5]=1
x^2-3x=4
4x^2+1=4x
[2x+1][x+2]=3
2x^2-5x-1=0
y^2+16=10y
t[t+2√2]=-2
x^2-x-1=0
能回答几道是几道,多多益善