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Use vertical form to add the polynomials.$$\begin{array}{l}{3 x^{3}+4 x^{2}-3 x+5} \\{3 x^{3}-4 x^{2}-x-7} \\\hline\end{array}$$
$6 x^{3}-4 x-2$
Algebra
Chapter 5
Exponents and Polynomials
Section 5
Adding and Subtracting Polynomials
Polynomials
Missouri State University
Campbell University
University of Michigan - Ann Arbor
Lectures
01:32
In mathematics, the absolu…
01:11
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Use vertical form to add t…
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use a vertical format to a…
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use a vertical format to s…
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we're being asked to add the two given Paulina meals. And if you know this, they're already given in vertical for the nice thing about vertical form is that all of your like terms are already lined up, so we simply need to combine our coefficients. So let's look at our first column. We have three extra 30 plus three X to the third, while three plus three is equal to six, so we'll be left with six x to the third power. Our next column is for X squared minus for X Square. Well, four minus four is zero, so we'll have plus zero X squared are 30. Column is negative three x minus X. Keep in mind when you don't see a coefficient, it's imaginary one. So in front of that negative X term we could really write Negative one x Well, negative three minus one is negative for, so we'll have a negative four X. And in their last column, we have five minus seven, which is negative, too. Now you can leave the says your final answer. However, it could be firmer simplified because if you know this, our second term has zero X squared, which means you essentially don't have any ex words, so we can simply write our final answer as six x to the third minus four x minus two.
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