Brotanabase123 Brotanabase123
  • 25-08-2018
  • Mathematics
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i need help pleeeeeease thank youuuuu

i need help pleeeeeease thank youuuuu class=

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GoddessofDork
GoddessofDork GoddessofDork
  • 25-08-2018

So firstly, reverse the signs in (6x^2 + 8x - 1) and change the minus sign to a plus sign:

[tex] \begin{alignedat}{2} 4x^2-9x+7\\ +(-6x^2)-8x+1\end{alignedat} [/tex]

Next, combine like terms:

[tex] \begin{alignedat}{3} 4x^2-9x+7\\ +(-6x^2)-8x+1\\-2x^2-17x+8\end{alignedat} [/tex]

The difference is -2x^2 - 17x + 8

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