What is x^2+3x-6x+8x^2 ?

The solution to x^2+3x-6x+8x^2 is 9x^2-3x

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simplify x^2+3x-6x+8x^2

simplify

x^{2} + 3 x - 6 x + 8 x^{2}

9 x^{2} - 3 x

Solution steps

x^{2} + 3 x - 6 x + 8 x^{2}

Add similar elements:

3 x - 6 x = - 3 x

= x^{2} - 3 x + 8 x^{2}

Group like terms

= x^{2} + 8 x^{2} - 3 x

Add similar elements:

x^{2} + 8 x^{2} = 9 x^{2}

= 9 x^{2} - 3 x

3 x^{2} - 2 x^{2}

\frac{8}{1}

\frac{1}{2} \div 6

\frac{cos ( 3 x )}{sin ( x )} + \frac{sin ( 3 x )}{cos ( x )}

\frac{6}{42}