For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

C

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

f(x) + g(x) = 2x + 3 + x² - 8 ← collect like terms

               = x² + 2x - 5 ← in standard form → C

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.