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Mathematics 6 Online
OpenStudy (anonymous):

(x^2+x+6)(x-6)

OpenStudy (anonymous):

multiply everything in the first parentheses by \(x\) then multiply it all by \(-6\) then combine like terms

OpenStudy (anonymous):

i can walk you through it if you like

OpenStudy (anonymous):

yes please!

OpenStudy (anonymous):

ok so first i did x^2 times x and it still remained x^2 right

OpenStudy (anonymous):

ok \[(x^2+x+6)(x-6)\]multiply everything in first parentheses by \(x\) you get \[x^3+x^2+6x\] then multiply everything by \(-6\) you get \[-6x^2-6x-36\] so as a start we have \[x^3+x^2+6x-6x^2-6x-36\] and then we have to combine like terms

OpenStudy (anonymous):

oh sorry i did not see your question' no, \(x^2\times x=x^3\) not \(x^2\)

OpenStudy (anonymous):

we can go even slower if you prefer

OpenStudy (anonymous):

\[x^3-6x-36?\]

OpenStudy (anonymous):

close

OpenStudy (anonymous):

because when i combine like terms 6x -6x cancel out

OpenStudy (anonymous):

yes that is true, there is no \(x\) term in the answer

OpenStudy (anonymous):

there is an \(x^3\) term, and also a \(-36\) so that part is right, but \(-6x^2+x^2=-5x^2\)

OpenStudy (anonymous):

ok what about -5x^2???

OpenStudy (anonymous):

x^3-5x-36?

OpenStudy (anonymous):

\[x^3+x^2+6x-6x^2-6x-36\] \[=x^3+x^2-6x^2+6x-6x-36\] \[=x^2-5x^2-36\]

OpenStudy (anonymous):

yes, that one is right

OpenStudy (anonymous):

yes! thank you

OpenStudy (anonymous):

i trying to get the hang of it

OpenStudy (anonymous):

but make sure you write \(-5x^2\) not \(-5x\) when you combine like terms keep the exponent the same

OpenStudy (anonymous):

a little practice and it will be easy it is more or less like multiplying a two digit number by a three digit number

OpenStudy (anonymous):

they said its not right

OpenStudy (anonymous):

i typed x^2-5x^2-36

OpenStudy (anonymous):

did you write \[x^3-5x^2-36\]?

OpenStudy (anonymous):

first term should be the \(x^3\) term

OpenStudy (anonymous):

yes i got it

OpenStudy (anonymous):

whew scared me for a moment

OpenStudy (anonymous):

I was typing to fast i guess lol

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