micahsechrist7 micahsechrist7
  • 06-12-2021
  • Mathematics
contestada

Written as a simplified polynomial in standard form, what is the result when
(2x + 7)2 is subtracted from 2X- 8?

Respuesta :

loneguy
loneguy loneguy
  • 06-12-2021

[tex]2x-8 - (2x+7)^2\\\\=2x-8 -(4x^2 + 2\cdot 2x \cdot 7 + 7^2)\\\\=2x-8-(4x^2 + 28x +49)\\\\=2x - 8 -4x^2-28x -49\\\\=-4x^2 -26x -57\\\\[/tex]

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