Mathematics
Junior High
Resolved
どうして[(x-3y)+2x]が(3x-3y)になるのですか??
次の式を因数分解しなさい。
例
2(x-3y)+ 4x(x-3y)=D2(r-3y){(xr-3y)+ 2x}
=2(x-3y)(3x -3g)
2(x-3u)(3r -3y)
=2(r-3y)·3(x-y)
=6(x-3y)(x-y)
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