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

The solution to (-3x^2+9x-9)+(-9x^2+9x+3) is -12x^2+18x-6

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simplify (-3x^2+9x-9)+(-9x^2+9x+3)

simplify

(- 3 x^{2} + 9 x - 9) + (- 9 x^{2} + 9 x + 3)

- 12 x^{2} + 18 x - 6

Solution steps

(- 3 x^{2} + 9 x - 9) + (- 9 x^{2} + 9 x + 3)

Simplify

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

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

Group like terms

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

Add similar elements:

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

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

Add similar elements:

9 x + 9 x = 18 x

= - 12 x^{2} + 18 x - 9 + 3

Add the numbers:

- 9 + 3 = - 6

= - 12 x^{2} + 18 x - 6

\frac{5 ^{7}}{5 ^{3}}

- 1 + (- 3)

lo g_{4} (10)

\frac{14}{2}

(2 - 2 x)^{2}

What is (-3x^2+9x-9)+(-9x^2+9x+3) ?
The solution to (-3x^2+9x-9)+(-9x^2+9x+3) is -12x^2+18x-6