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I need help with:

r(x)= 4/5x^2 + 8x + 15

What do you do with the 4/5X^2?

I know that (x+3) and (x+5) is the factoring for x^2 + 8X + 15 but have no clue what to do with the 4/5.

The 4/5 is division.

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