Question

Perform the operation. (9x^2-8)+(9x^2+9x+3)

Answer 1

The answer is -5

Explanation:

Hope it helps

Answer 2

Explanation:

Like terms have same variable with same power. Combine the like terms. Add / subtract the coeffiecient of the like terms.

9x² and 9x² are like terms

-8 and 3 are like terms.

9x² - 8 + 9x² + 9x + 3 = 9x² + 9x² +9x - 8 + 3

= 18x² + 9x - 5