fabo83 fabo83
  • 23-11-2018
  • Mathematics
contestada

Simplify. (2x2 - 5x + 3) - (-x2 + 4x - 5)

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gmany
gmany gmany
  • 23-11-2018

[tex](2x^2-5x+3)-(-x^2+4x-5)\\\\=2x^2-5x+3-(-x^2)-4x-(-5)\\\\=2x^2-5x+3+x^2-4x+5\qquad\text{combine like terms}\\\\=(2x^2+x^2)+(-5x-4x)+(3+5)\\\\=\boxed{3x^2-9x+8}[/tex]

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