Perform the indicated operations. (2x^2-x)+(x^2+4x)

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Hello. Today we're gonna be adding the polynomial is together. So what we are given is nine X. To the seventh minus X cubed plus the quantity three X to the seventh plus 11 X cubed. Now in order to add these polynomial together we're going to need to first eliminate the parentheses around the quantities C. For the second quantity. In order to open up the parentheses were essentially distributing positive 123 X to the seventh plus 11 X cubed. But that isn't going to change the signs of the given polynomial. So since this is a sum of two polynomial we can rewrite this entire expression without the need for the parentheses. And doing this is going to give us nine X to the seventh minus X cubed plus three X to the seventh plus 11 X cubed. Now in order to simplify this we're going to have to combine the like terms together. We can combine the X. To the seventh terms together and we can combine the X. Cubed terms together. So nine X to the seventh plus three X. To the seventh is going to give us 12 X to the seventh and negative X cubed plus 11 X cubed is going to give us positive X cubed. And this is going to be the sum of the original expression. And with that being said, the answer to this problem is going to be C. So I hope this video helps you in understanding how to approach this problem and I'll go ahead and see you all in the next video

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Perform the indicated operations. (2x^2-x)+(x^2+4x)

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