Question

If f(x)=2x^2+1 and g(x)= x^2-7 find (f-g)(x)

Answer 1

x² + 8

Explanation:

(f - g)(x)

= f(x) - g(x)

= 2x² + 1 - (x² - 7)

= 2x² + 1 - x² + 7 ← collect like terms

= x² + 8