Your problem is 3 (3x^2 + 1x - 5).

In a case like this, what you need to do is multiply **each** part of the polynomial by 3.

3 (3x^2) = 9x^2

3 (1x) = 3x

3 (-5) = -15

So, you are left with this:

9x^2 + 3x - 15

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