How do you simplify #(-12x^3+5x-23)-(4x^4+31-9x^3)#?

1 Answer
EZ as pi
Jun 6, 2018

# =-4x^4-3x^3 +5x-54#

Explanation:

In order to simplify you need to add the like terms.

Remove the brackets first.

#(-12x^3+5x-23)color(red)(-(4x^4+31-9x^3))#

#= -12x^3+5x-23 color(red)(-4x^4-31+9x^3)" "larr# note the signs

#=-4x^4-12x^3+9x^3 +5x-23-31" "larr# re-arrange

# =-4x^4-3x^3 +5x-54" "larr# add like terms

Related questions
See all questions in Addition and Subtraction of Polynomials
Impact of this question
1877 views around the world
You can reuse this answer
Creative Commons License