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Mathematics 11 Online
OpenStudy (anonymous):

CLOOOOOOOOOSED

OpenStudy (anonymous):

I can try but I can't promise I know the answer

OpenStudy (whpalmer4):

Do you know how to factor by grouping?

OpenStudy (whpalmer4):

\[x^3+10x^2-9x-90\]Group each pair of terms: \[(x^3+10x^2)-(9x+90)\]Note well that I factored out a -1 so the -90 becomes 90 inside the group Now, can you factor each of the two groups? What do you get?

OpenStudy (whpalmer4):

No. What are the common factors of \(x^3\) and \(10x^2\)?

OpenStudy (whpalmer4):

You're just adding and subtracting here, how could you get \(x^5\)?!?

OpenStudy (whpalmer4):

What are the common factors of \(x^3\) and \(10x^2\)? \(x^3= x*x*x\) and \(10x^2 = 10*x*x\) What can you factor out of both of those quantities?

OpenStudy (whpalmer4):

If it's getting complicated, it's only because you're inventing some new mathematics here :-)

OpenStudy (whpalmer4):

Charming: user blocks helper, after requesting their help!

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