更新时间2019-08-12 00:30:10
(x+3)²-(4-3x)²=0
(x+3+4-3x)(x+3-4+3x)=0
(7-2x)(4x-1)=0
x1=3.5 x2=1/4
(x+3)²-(4-3x)²=0
x²+6x+9-16+24x-9x²=0
-8x²+30x-7=0
8x²-30x+7=0
(2x-7)(4x-1)=0
解得:X₁=7/2,X₂=1/4
(x+3)²-(4-3x)²=0
(x+3+4-3x)(x+3-4+3x)=(7-2x)(4x-1)=0
x1=3.5
x2=1/4=0.25