Question

F(x)=x2+3x+5 find f(3)

Answer 1

Answer:
`f(3)=\Large\boxed{23}`

Explanation:

Given function expression

`f(x)=x^2+3x+5`

Requirements of the question

`\text{Find the value of }f(3)`

Substitute values into the expression

`f(3)=(3)^2+3(3)+5`

Simplify the exponent

`f(3)=9+3(3)+5`

Simplify by multiplication

`f(3)=9+9+5`

Simplify by addition

`f(3)=18+5`

`f(3)=\Large\boxed{23}`

Hope this helps!! :)

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Answer 2

x=3

so we substitute 3 in the equation

f(3)= (3)2+(3)3+5

f(3)=6+9+5

f(3)=20