12. [-/1 Points] DETAILS MY NOTES TGEIALG6 5.5.058. 24
    Use vertical form to subtract the polynomials. (Simplify your answer completely.)
    Subtract from .
    SUBMIT ANSWER
13. [-/1 Points] DETAILS MY NOTES TGEIALG6 5.5.066.

To subtract the polynomials from , write them in vertical form, aligning like terms:

   9y^2 +  9y + 19
- (6y^2 - 9y + 9)
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Now, perform the subtraction:

So, the simplified answer is .

In the world of polynomials, subtraction isn’t just about numbers; it’s about managing the signs of your terms! Always remember to distribute the negative sign to all terms in the polynomial you are subtracting, as this can be a common pitfall. Mistakes can easily occur when it comes to flipping signs, so double-check your work!

If you’re keen to dive deeper into polynomial operations, grabbing a textbook like “Algebra and Trigonometry” by Michael Sullivan can provide a wealth of practice problems and explanations. There are also plenty of online resources such as Khan Academy that offer interactive exercises to master polynomial subtraction in a jiffy!