Question

Given g(x)=9x^2 - 5 and k(x)=x^2 + 3x -1 , find g(x)+k (x) .

Answer 1

g(x) + k(x) = 10x² + 3x - 6

Explanation:

g(x) + k(x)

= 9x² - 5 + x² + 3x - 1 ← collect like terms

= (9x² + x² ) + 3x + (- 5 - 1 )

= 10x² + 3x + (- 6)

= 10x² + 3x - 6