2(1/6+1/8)+1/6x*1/8x-1/12x=1咋解?快
问题描述:
2(1/6+1/8)+1/6x*1/8x-1/12x=1咋解?
快
答
2(1/6+1/8)+1/6x*1/8x-1/12x=1
7/12+1/48x²-1/12x=1
x²-4x=20
x²-4x+4=24
(x-2)²=(±2√6)²
x-2=±2√6
x=2±2√6