(-9m的2次+4n的2次)除以(3m+2n)

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(-9m的2次+4n的2次)除以(3m+2n)

(-9m的2次+4n的2次)除以(3m+2n)
(-9m的2次+4n的2次)除以(3m+2n)

(-9m的2次+4n的2次)除以(3m+2n)
(-9m^2+4n^2)÷(3m+2n)
=(4n^2-9m^2)÷(3m+2n)
=(2n+3m)(2n-3m)÷(3m+2n)
=2n-3m

(-9m^2+4n^2)/(3m+2n)
=-(3m+2n)(3m-2n)/(3m+2n)
=2n-3m

(-9m^2+4n^2)/(3m+2n)
=-(3m+2n)(3m-2n)/(3m+2n)
=-(3m-2n)
=2n-3m