How do you subtract #(6x ^ { 2} + 9x - 4) - ( 2x ^ { 2} - 4x - 6)#?
1 Answer
Nov 5, 2016
Explanation:
The first bracket is multiplied by 1 and the second bracket by
- 1.That is
#color(red)(1)(6x^2+9x-4)color(red)(-1)(2x^2-4x-6)# distribute the brackets.
#6x^2+9x-4-2x^2+4x+6# now collect like terms.
#(6x^2-2x^2)+(9x+4x)+(-4+6)#
#=4x^2+13x+2#
