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Mathematics 17 Online
OpenStudy (anonymous):

i need help with polynomials

OpenStudy (anonymous):

OpenStudy (anonymous):

im not sure what the answer is or how to doit

OpenStudy (unanimoose):

We can combine the two polynomials to make it look like this. \[5n^2 + 3n^2 + 7n + 6n + 3 = ??\] Are you familiar with combining like terms?

OpenStudy (anonymous):

let me reword that i know how to do it how do i add the two equations?

OpenStudy (alexandervonhumboldt2):

(3n^2+7n+5n^2+6n+3)*2=((3n^2+5n^2)+(7n+6n)+3)*2=(8n^2+13n+3)*2=now just multiply each of them them by 2 like terms are 5n^2 with 3n^2 , 7n with 6n, and 3 with nothing

OpenStudy (unanimoose):

This is finding the perimeter, not the area. We must ADD not MULTIPLY.

OpenStudy (unanimoose):

\[5n2+3n2+7n+6n+3=??\] Do you know how to combine like terms?

OpenStudy (anonymous):

so add the two equations together like for example x+y then solve?

OpenStudy (unanimoose):

yes, try it out an tell me what you get

OpenStudy (anonymous):

okwell hold on

OpenStudy (unanimoose):

Remember, like terms have the same variables with includes the exponent. 2n^2 and 2n cant be combined because 2n^2 has a different value fr the variable due to the exponent. 2n + 2n CAN be combined for 4n because 'n' has the same value in each.

OpenStudy (anonymous):

3n^2+7n+5n^2+6n+3 is this right

OpenStudy (unanimoose):

Yeah, combine them now.

OpenStudy (anonymous):

8 n^2+13 n+3

OpenStudy (anonymous):

c

OpenStudy (unanimoose):

It's asking for simplest form so you need to combine the like terms.

OpenStudy (anonymous):

so is c right?

OpenStudy (unanimoose):

Yep. :)

OpenStudy (anonymous):

@Unanimoose thank you

OpenStudy (unanimoose):

np

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