How do you simplify #(5x^4 -2x^2)- (3x -2x^2- 4x^3+ 6x^4#)?
1 Answer
Aug 21, 2016
Explanation:
One way of understanding and doing subtractions is to
"Add on the Inverse"
This means all subtractions can be changed to additions by using the additive inverses. (change the signs)
OR you can remember that a minus sign before a bracket changes the signs inside the bracket.
Get rid of the brackets and use the red minus sign (same as -1) with the distributive law into the second bracket.
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