What is 8x^2-x(x-7)-2x ?

The solution to 8x^2-x(x-7)-2x is 7x^2+5x

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simplify 8x^2-x(x-7)-2x

simplify

8 x^{2} - x (x - 7) - 2 x

7 x^{2} + 5 x

Solution steps

8 x^{2} - x (x - 7) - 2 x

Expand

- x (x - 7) : - x^{2} + 7 x

= 8 x^{2} - x^{2} + 7 x - 2 x

Add similar elements:

8 x^{2} - x^{2} = 7 x^{2}

= 7 x^{2} + 7 x - 2 x

Add similar elements:

7 x - 2 x = 5 x

= 7 x^{2} + 5 x

x (x^{2} + 1)^{3}

lo g_{\frac{1}{2}} (\frac{1}{64})

4 x + 8 - 3 x

7921

\frac{x ^{2} - 36}{5 x ^{3} + 30 x ^{2}}