Posted by lisa on Wednesday, February 20, 2013 at 7:23pm.
You 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.
so would it be
7x^2-6??
-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.
oh because i thought it was a negative and a positive so they cancel out
but its 7x^2-6x-6? or...?
Correct. You have to be careful with the signs.
Thank you c:
You are welcome.
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