How do you simplify #(-x^2 +9x -2) -(9x^2- 4x+ 4#)?

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Answer 1 · 2018-03-10T17:11:14

#-10x^2 + 13x - 6#

All you have to do is pretty much subtract the different powered variables #(Ex. x^3, x^2, x)#
so ...
#-x^2 - 9x^2 = -10x^2#

#9x - (-4x) = 13x#

#-2 - 4 = -6#

Answer: #-10x^2 + 13x -6#

Answer 2 · 2018-03-10T17:13:08

#(x^2+9x-2)-(9x^2-4x+4)=-8x^2+13x-6#

#(x^2+9x-2)-(9x^2-4x+4)#
#=x^2+9x-2-9x^2+4x-4#
#=x^2-9x^2+9x+4x-2-4#
#(1-9)x^2+(9+4)x-(2+4)#
#-8x^2+13x-6#