What is (9x^2-5x)-(-3x-8) ?

The solution to (9x^2-5x)-(-3x-8) is 9x^2-2x+8

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simplify (9x^2-5x)-(-3x-8)

simplify

(9 x^{2} - 5 x) - (- 3 x - 8)

9 x^{2} - 2 x + 8

Solution steps

(9 x^{2} - 5 x) - (- 3 x - 8)

Apply rule:

(a) = a

(9 x^{2} - 5 x) = 9 x^{2} - 5 x

= 9 x^{2} - 5 x - (- 3 x - 8)

Apply the distributive law:

- (- a - b) = a + b

- (- 3 x - 8) = 3 x + 8

= 9 x^{2} - 5 x + 3 x + 8

Add similar elements:

- 5 x + 3 x = - 2 x

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

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

\frac{1}{2} \cdot (- 3)

\frac{x ^{3} + 1}{x + 1}

(t + 1)^{2}

\frac{2 + cot ^{2} ( x )}{csc ^{2} ( x )} - 1