SOLUTION: Can you please help me understand the rules and format for this type of math? (6x^2-4x+7)+(2x^2-3x-9)= I tried this one,but i cant figured it out? 6x-(4x-5)=13 6x+(4x+5

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Question 128560: Can you please help me understand the rules and format for this type of math?

(6x^2-4x+7)+(2x^2-3x-9)=
I tried this one,but i cant figured it out?
6x-(4x-5)=13
6x+(4x+5)=13

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Start with the given expression


Group like terms


Combine like terms

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