4x+3(2x-3)=12-x(x-4)怎么解

2024-11-30 00:57:03
推荐回答(3个)
回答1:

4x+3(2x-3)=12-x(x-4)
4x+6x-9=12-x^2+4x
x^2+6x+9=30
(x+3)^2=30
x+3=±√30
x=-3±√30

回答2:

4x+3(2x-3)=12-x(x-4)
4x+6x-9=12-x²+4x
x²-6x-21=0
(x-3)²=21+9=30
x=3±根号30

回答3:

4x+3(2x-3)=12-x(x-4)
4x+6x-9=12-x^2+4x
10x-9=12-x^2+4x
x^2+6x-21=0
(x+3)^2=30