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Use vertical form to subtract the polynomials.$$\begin{array}{l}\quad{9.7 y^{3} \quad\quad\quad\quad+\quad y+1.1} \\{-\left(6.3 y^{3}-4.4 y^{2}+2.7 y+8.8\right)} \\\hline\end{array}$$
$3.4 y^{3}+4.4 y^{2}-1.7 y-7.7$
Algebra
Chapter 5
Exponents and Polynomials
Section 5
Adding and Subtracting Polynomials
Polynomials
Campbell University
University of Michigan - Ann Arbor
Idaho State University
Lectures
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We're being asked to use vertical form to subtract the given palling. No meals while when we subtract palling. No meals, Remember, we need to change the sign off each of the terms in the second polynomial. So here's what we're gonna do. We're going to rewrite our first row as it's so we'll have 9.7. Why? To the third I'm gonna leave a space. Plus why, plus 1.1 now We need to change the sign of each of those terms in that second Paulino meal. So positive 6.3 y to the 30 become negative. 6.3. Why, to the third negative 4.4 y Square will become positive. 4.4 y squared Positive 2.7. Why will become negative 2.7. Why? And positive 8.8 will become negative 8.8. And now we just need to combine like terms within each call. So let's look at the first call. We have 9.7 y to the third, minus 6.3. Why to the third Well 9.7 minus 6.3 is 3.4, so we'll have 3.4. Why to the third. Well, if you know this in the second column, all we have is plus 4.4 y squared. So we simply need to bring that down. And then that column we have. Why, minus 2.7, why we remember in front of the wide there's an imagine every one. So we simply need to subtract one minus 2.7, which is negative. 1.7. So we'll have negative 1.7. Why and their last column. We have 1.1 minus a point A, which is negative 7.8, and that right there will be our final answer.
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