SOLUTION: 1) Combine: [(2/5)x2 + (3/4)x + 5] – [(2/3)x2 – (2/3)x – 6] I'm unsure how to solve this question with the brackets thanks

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Question 176041: 1) Combine: [(2/5)x2 + (3/4)x + 5] – [(2/3)x2 – (2/3)x – 6]
I'm unsure how to solve this question with the brackets
thanks
Found 2 solutions by user_dude2008, josmiceli:
Answer by user_dude2008(1862)   (Show Source): You can put this solution on YOUR website!
Note: x^2 means x squared 

[(2/5)x^2 + (3/4)x + 5] – [(2/3)x^2 – (2/3)x – 6]=(2/5)x^2 + (3/4)x + 5 – (2/3)x^2 + (2/3)x + 6
                                                 =[(2/5)x^2– (2/3)x^2] + [(3/4)x + (2/3)x ] + [5  + 6]
                                                 =-(4/15)x^2 + (17/12)x + 11

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!

When you have lots of ( )s and [ ]s, it can get confusing
One way to help with this is to say


Now rewrite the expression

What's ?

Now combine like terms
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