What is (9x^2+6x-7)+(-9x-5) ?

The solution to (9x^2+6x-7)+(-9x-5) is 9x^2-3x-12

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simplify (9x^2+6x-7)+(-9x-5)

simplify

(9 x^{2} + 6 x - 7) + (- 9 x - 5)

9 x^{2} - 3 x - 12

Solution steps

(9 x^{2} + 6 x - 7) + (- 9 x - 5)

Simplify

(9 x^{2} + 6 x - 7) + (- 9 x - 5) : 9 x^{2} + 6 x - 7 - 9 x - 5

= 9 x^{2} + 6 x - 7 - 9 x - 5

Group like terms

= 9 x^{2} + 6 x - 9 x - 7 - 5

Add similar elements:

6 x - 9 x = - 3 x

= 9 x^{2} - 3 x - 7 - 5

Subtract the numbers:

- 7 - 5 = - 12

= 9 x^{2} - 3 x - 12

\frac{23}{5}

4^{- 6} \cdot 4^{4} \cdot (2^{3} \cdot 2^{- 4})^{- 1}

\frac{( a ^{2} b - b ^{3} )}{( 2 ab - 2 b ^{2} )}

(6 x^{2} + 7 x + 2) - (- 9 x^{2} - 10)

\frac{6 x + 2}{x ^{3} - 2 x - 7}