帮忙解几道方程.1 .(y-2)(y-4)=2 2.3m的二次方-2m=0 3.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+31 .(y-2)(y-4)=22.3m的二次方-2m=03.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+3)
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![帮忙解几道方程.1 .(y-2)(y-4)=2 2.3m的二次方-2m=0 3.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+31 .(y-2)(y-4)=22.3m的二次方-2m=03.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+3)](/uploads/image/z/4357159-7-9.jpg?t=%E5%B8%AE%E5%BF%99%E8%A7%A3%E5%87%A0%E9%81%93%E6%96%B9%E7%A8%8B.1+.%EF%BC%88y-2%EF%BC%89%EF%BC%88y-4%EF%BC%89%3D2+2.3m%E7%9A%84%E4%BA%8C%E6%AC%A1%E6%96%B9-2m%3D0+3.x%E7%9A%84%E4%BA%8C%E6%AC%A1%E6%96%B9%2B2%E6%A0%B9%E5%8F%B75%2B5%3D0+4.5x%EF%BC%88x%2B3%EF%BC%89%3D2%EF%BC%88x%2B31+.%EF%BC%88y-2%EF%BC%89%EF%BC%88y-4%EF%BC%89%3D22.3m%E7%9A%84%E4%BA%8C%E6%AC%A1%E6%96%B9-2m%3D03.x%E7%9A%84%E4%BA%8C%E6%AC%A1%E6%96%B9%2B2%E6%A0%B9%E5%8F%B75%2B5%3D0+4.5x%EF%BC%88x%2B3%EF%BC%89%3D2%EF%BC%88x%2B3%29)
帮忙解几道方程.1 .(y-2)(y-4)=2 2.3m的二次方-2m=0 3.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+31 .(y-2)(y-4)=22.3m的二次方-2m=03.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+3)
帮忙解几道方程.1 .(y-2)(y-4)=2 2.3m的二次方-2m=0 3.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+3
1 .(y-2)(y-4)=2
2.3m的二次方-2m=0
3.x的二次方+2根号5+5=0
4.5x(x+3)=2(x+3)
帮忙解几道方程.1 .(y-2)(y-4)=2 2.3m的二次方-2m=0 3.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+31 .(y-2)(y-4)=22.3m的二次方-2m=03.x的二次方+2根号5+5=0 4.5x(x+3)=2(x+3)
1 .(y-2)(y-4)=2
y^2-6y+8=2
y^2-6y+6=0
b^2-4ac=36-24=12
y=3+根3 y=3-根3
2.3m^2-2m=0
m(3m-2)=0
m=0 m=2/3
3.x^2+2根号5+5=0
(x+根号5)^2=0
x=-根号5
4.5x(x+3)=2(x+3)
(x+3)(5x-2)=0
x=-3 x=2/5
(1)(y-2)(y-4)=2
y^2-6y+8-2=0
y^2-6y+6=0
∵△=√(36-4×6)=2√3
∴y=[6±2√3]/2
∴y=3±√3
(2)3m^2-2m=0
m(3m-2)=0
∴m=0或2/3
(3)x^2...
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(1)(y-2)(y-4)=2
y^2-6y+8-2=0
y^2-6y+6=0
∵△=√(36-4×6)=2√3
∴y=[6±2√3]/2
∴y=3±√3
(2)3m^2-2m=0
m(3m-2)=0
∴m=0或2/3
(3)x^2+2√5+5=0
∴(x+√5)^2=0
x=-√5
(4)5x(x+3)=2(x+3)
5x(x+3)-2(x+3)=0
( 5x-2)(x+3)=0
∴x=2/5或-3
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