Question

(X-3)(X-4)=5X用公式法 解方程

速度啊啊啊啊啊啊

Answer 1

.(x-3)(x-4)=5x
x²野春-7x+12=5x
x²拍脊尘-12x=-12
(x-6)²=-12+36
(x-6)²袭禅=24
x-6=±2√6
x=6±2√6

Answer 2

(X-3)(X-4)=5X
x²-7x+12-5x=0
x²掘则枯盯岩-12x+12=0
x=(12±√（12²-4×12）判洞)/2
=(12±√96)/2
=6±3√6