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i need help on an equation

i hope you can understand that

The first term, 5*b^3 * a^3, when divided by 5 * a^2 * b^2 gives ab.
That is because 5/5 = 1, a^3 / a^2 = a, and b^3 / b^2 = b.
That makes the 1st term reduce to ab.

Doing the same thing for the 2nd term, we get -15a^2b^4/(5a^2b^2) = -3b^2.

Thus, combining these gives ab - 3b^2.


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Scott A Wilson


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