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Mathematics 8 Online
Joe348:

help

Joe348:

1 attachment
Joe348:

@extrinix

Extrinix:

What gets you \((x+z)(x+v)\) ? (variables have no meaning just saying, except x)

Extrinix:

You get x by itself by square rooting \(25x^2\), for starters

Joe348:

so 5?

Extrinix:

Yes, which would give you \(5x\) Making this \((5x+z)(5x+v)\) Now what times what gives you \(-81\)?

Joe348:

9 times 9?

Joe348:

wait no 9 times -9?

Extrinix:

Correct, which would make your factored form... what?

Joe348:

um 5x-9 and 5x+9?

Extrinix:

Correct, so you would have \((5x-9)(5x+9)\)

Joe348:

you got time for a few more? o;

Extrinix:

Once I switch classes, yes

Joe348:

okay let me know

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