4x²+3x=0x(4x+3)=0x=0,或x=-3/4
4x的平方+3x=0x(4x+3)=0x=0或4x+3=0x=0或x=-3/4
X=0或四分之三
4x^2+3x=x(4x+3)=0so x = 0 or 4x+3 = 0 => x=-3/4x = 0 or -3/4
