Let
f(x) = x^2 + 5x
and
g(x) = 2x^2 − 4.

Find the function.
f + g

(f + g)(x) = ?

f + g  = 3x^2  + 5x - 4

Step-by-step explanation:

We see addition of functions.

f(x)  = x^2  + 5x

g(x) = 2x^2  - 4

Simply add the expressions.

f + g = (x^2  + 5x)   + (2x^2 - 4)  = 3x^2  + 5x - 4

f + g  = 3x^2  + 5x - 4

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

7

step-by-step explanation: