Question

If F(x) = x² + 4x and G(x) = 2x + 2, find F(5) + G(6).

44
59
98

Answer 1

f(5)=(5)^2+4(5)
f(5)=25+20=45
g(6)=2(6)+2
g(6)=12+2=14
45+14=59

Answer 2

The answer is 59

Explanation:

In order to determine
`F(5)+G(6)` , first we have to determine
`F(5)` and
`G(6)` separately.

For
`F(x)=x^2+4*x`, we replace the variable "x" by 5:

`x=5\\F(5)=(5)^2+4*(5)=25+20=45`

For
`G(x)=2*x+2`, we replace the varibale "x" by 6:

`x=6\\G(6)=2*(6)+2=12+2=14`

The previous procedure is called "evaluating function".

Finally,

`F(5)+G(6)\\45+14\\59`