What is (-3x)-(2x^2-8x) ?

The solution to (-3x)-(2x^2-8x) is -2x^2+5x

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simplify (-3x)-(2x^2-8x)

simplify

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

- 2 x^{2} + 5 x

Solution steps

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

Apply rule:

(- a) = - a

(- 3 x) = - 3 x

= - 3 x - (2 x^{2} - 8 x)

Apply the distributive law:

- (a - b) = - a + b

- (2 x^{2} - 8 x) = - 2 x^{2} + 8 x

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

Group like terms

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

Add similar elements:

- 3 x + 8 x = 5 x

= - 2 x^{2} + 5 x

(2 x - 5 y)^{5}

e^{l n (x - 2)}

\frac{x ^{8}}{x ^{11}}

9 w (7 w + 5 z) - 6 w (4 z + 3 w)