因式分解①3x(x-2)=4-2x ②5x^2+3x=0 ③(3x+2)^2=4(x-3)^2
问题描述:
因式分解①3x(x-2)=4-2x ②5x^2+3x=0 ③(3x+2)^2=4(x-3)^2
答
①3x(x-2)=4-2x3x^2-6x=4-2x 3x^2-4x-4=0 (x+2)(3x-2)=0x1=-2 x2=2/3②5x^2+3x=0x(5x+3)=0x1=0x2=-3/5③(3x+2)^2=4(x-3)^29x^2+12x+4=4x^2-24x+365x^2-12x-32=0(5x+8)(x-4)...