x(x-7)-10(x-7)=0这个方程怎么解啊?
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x(x-7)-10(x-7)=0这个方程怎么解啊?
x(x-7)-10(x-7)=0这个方程怎么解啊?
x(x-7)-10(x-7)=0这个方程怎么解啊?
提取(x-7),(x-7)(x-10)=0
所以X1=7,X2=10
x2-17x+70=0
x=10或7
x(x-7)-10(x-7)=0
(x-10)(x-7)=0
x=10 或x=7
(x-7)(x-10)=0
x=7 or x=10
=(x-7)(x-10)
X1=7 X2=10