SOLUTION: Trying to complete hw with my child (5x2 +4x -7) + (-5x2-4x+7) the 2s are squared. Unsure what to do with the negative sign and the different signs of the x.

Algebra ->  Distributive-associative-commutative-properties -> SOLUTION: Trying to complete hw with my child (5x2 +4x -7) + (-5x2-4x+7) the 2s are squared. Unsure what to do with the negative sign and the different signs of the x.      Log On


   

Question 496896: Trying to complete hw with my child
(5x2 +4x -7) + (-5x2-4x+7)
the 2s are squared. Unsure what to do with the negative sign and the different signs of the x.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
%285x%5E2+%2B4x+-7%29+%2B+%28-5x%5E2-4x%2B7%29
Since it's plus, you can remove the parentheses.
= 5x%5E2+%2B4x+-7++-5x%5E2-4x%2B7
= 0