3X平方-12X=-12用因式分解怎么解?
问题描述:
3X平方-12X=-12用因式分解怎么解?
答
3x^2 - 12x = -12 ==> 3x^2 - 12x +12 = 0 ==> x^2 - 4x + 4 = 0 ==> (x-2)^2 = 0 ==> x = 2
3X平方-12X=-12用因式分解怎么解?
3x^2 - 12x = -12 ==> 3x^2 - 12x +12 = 0 ==> x^2 - 4x + 4 = 0 ==> (x-2)^2 = 0 ==> x = 2