How do you combine like terms in #(4x^2-5x-3)-(-4x^2+8x-9)#?
1 Answer
Sep 16, 2016
Explanation:
The first step is to distribute the brackets and then collect like terms.
#color(red)(1)(4x^2-5x-3)color(red)(-1)(-4x^2+8x-9)#
#=4x^2-5x-3+4x^2-8x+9" distributing brackets"# Like terms are terms which have the same variable.
combining them.
#(color(red)(4x^2-4x^2))+(color(magenta)(-5x-8x))+(color(blue)(-3+9))# and simplifying.
#=-13x+6#
