7x+1 - x^2+3x-8
i got x^2-4x+9 but my teacher said it was wronge. how do I correctly solve this problem?
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Where did the - go for x² ?
I am not sure why would the x^2 be negative i am so lost
Originally Posted by imbadatmath I am not sure why would the x^2 be negative i am so lost Are you subtracting the entire last 3 terms? If not, the original expression you entered was:
Grouping like terms and evaluating, we get:
Rearranging this into proper form, we get:
Does that make sense?
there where only 2 polnomials 7x+1 minus x^2+3x-8
Originally Posted by imbadatmath there where only 2 polnomials 7x+1 minus x^2+3x-8 ok, then you should have written it like this:
Now, distribute the negative sign for the second polynomial:
Now group like terms:
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