What is (3x^2-3x+9)+(-5x^2-8x-7) ?

The solution to (3x^2-3x+9)+(-5x^2-8x-7) is -2x^2-11x+2

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simplify (3x^2-3x+9)+(-5x^2-8x-7)

simplify

(3 x^{2} - 3 x + 9) + (- 5 x^{2} - 8 x - 7)

- 2 x^{2} - 11 x + 2

Solution steps

(3 x^{2} - 3 x + 9) + (- 5 x^{2} - 8 x - 7)

Simplify

(3 x^{2} - 3 x + 9) + (- 5 x^{2} - 8 x - 7) : 3 x^{2} - 3 x + 9 - 5 x^{2} - 8 x - 7

= 3 x^{2} - 3 x + 9 - 5 x^{2} - 8 x - 7

Group like terms

= 3 x^{2} - 5 x^{2} - 3 x - 8 x + 9 - 7

Add similar elements:

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

= - 2 x^{2} - 3 x - 8 x + 9 - 7

Add similar elements:

- 3 x - 8 x = - 11 x

= - 2 x^{2} - 11 x + 9 - 7

Subtract the numbers:

9 - 7 = 2

= - 2 x^{2} - 11 x + 2

\frac{5}{3} + \frac{7}{2}

(5 x - y) (y - 2 x)

(2 a + 3) (2 a - 3) - (2 a + 3)^{2}

3 (x + 2 x - 2 x + 3 x)

(2 x^{2} - 6 x - 5) + (- 9 x^{2} + 5 x - 4)

What is (3x^2-3x+9)+(-5x^2-8x-7) ?
The solution to (3x^2-3x+9)+(-5x^2-8x-7) is -2x^2-11x+2