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Troyanec [42]
4 years ago
10

Simplify 2x^2+6x-7x+8-3x^2+1

Mathematics
2 answers:
RSB [31]4 years ago
5 0
2x^2+6x-7x+8-3x^2+1 

2x^2+ x +8-3x^2+1 

2x^2+ x -3x^2+ 9

-x^2 - x + 9 \ \textless \ ------- Simplified 


_____________

Hey there! All we did was combine like terms to get our answer. 

For instance, in the equation 2x^2+6x-7x+8-3x^2+1, 

6x and 7x are indeed like terms becuase they have the same 

value of the variable 'x.' Then, I proceeded in subtracting the two

values as the equation exemplified. 

Doss [256]4 years ago
3 0
(((((2*(x^2))+6x)-7x)+8)-3x^2)+1 \\ \\ ((((2x^2 +  6x) -  7x) +  8) -  3x^2) +  1 \\ \\ we \ would \ then \ (pull \ out) \ like \ terms. \\ \\   -x^2 - x + 9  =   -1 * (x^2 + x - 9) \\ \\   \left[\begin{array}{ccc}   -9    +    1    =    -8 \\
      -3    +    3    =    0 \\
      -1    +    9    =    8 \\
\end{array}\right]  \\ \\ Your \ answer: \boxed{\boxed{\bf{  -x^2 - x + 9
}}}

I hope this helps you!
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