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September 18, 2014

September 18, 2014

Posted by **lisa** on Wednesday, February 20, 2013 at 7:23pm.

how would you solve this???? please help

- math -
**JJ**, Wednesday, February 20, 2013 at 7:26pmYou have to combine like terms.

When you add you keep the variable(letter) with its exponent and and the coefficients (numbers in front)

3x + 5x = 8x

You are going to combine your x^2 terms

your x terms and your constants.

Show me your answer and I will check it.

- math -
**lisa**, Wednesday, February 20, 2013 at 7:32pmso would it be

7x^2-6??

- math -
**JJ**, Wednesday, February 20, 2013 at 7:34pm-3x -3x = -6x

this is the same as -3x + -3x + -6x

You are right, but missing the middle term.

-3x + 3x = 0 that isn't what you had here.

- math -
**lisa**, Wednesday, February 20, 2013 at 7:37pmoh because i thought it was a negative and a positive so they cancel out

but its 7x^2-6x-6? or...?

- math -
**JJ**, Wednesday, February 20, 2013 at 7:44pmCorrect. You have to be careful with the signs.

- math -
**lisa**, Wednesday, February 20, 2013 at 7:45pmThank you c:

- math -
**JJ**, Wednesday, February 20, 2013 at 8:07pmYou are welcome.

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