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

The solution to (9x^2-8)+(9x^2+9x+3) is 18x^2+9x-5

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

simplify

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

18 x^{2} + 9 x - 5

Solution steps

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

Simplify

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

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

Group like terms

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

Add similar elements:

9 x^{2} + 9 x^{2} = 18 x^{2}

= 18 x^{2} + 9 x - 8 + 3

Add the numbers:

- 8 + 3 = - 5

= 18 x^{2} + 9 x - 5

5 \times 7

\frac{2}{3} 45

\frac{1}{1 + sin ( x )} - \frac{1}{1 - sin ( x )}

\frac{26}{5}

- \frac{1}{7} 147

What is (9x^2-8)+(9x^2+9x+3) ?
The solution to (9x^2-8)+(9x^2+9x+3) is 18x^2+9x-5