若丨m-4丨+(√n-5)²=0,将mx²-ny²分解因式结果为:
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若丨m-4丨+(√n-5)²=0,将mx²-ny²分解因式结果为:
若丨m-4丨+(√n-5)²=0,将mx²-ny²分解因式结果为:
若丨m-4丨+(√n-5)²=0,将mx²-ny²分解因式结果为:
∵丨m-4丨+(√n-5)²=0
绝对值和平方都是大于等于0的
和为0
就是都为0
所以
m-4=0
m=4
√n-5=0
n=25
mx²-ny²
=4x^2-25y^2
=(2x+5y)(2x-5y)