Question

Can someone help me please

Answer 1

Explanation:

`f(x) = 2x + {x}^(2) + (x + x) - 4 \\ f(x) = 2x + {x}^(2) +2x - 4 \\ f(x) = {x}^(2) + 4x - 4 \\ f(3) = {(3)}^(2) + 4(3) - 4 \\ f(3) = 9 + 12 - 4 \\ \boxed{f(3) = 17}`

• 17 is the right answer.

Answer 2

`2x + {x}^(2) + (x + x) - 4`

when x is 3:

`= 2(3) + {(3)}^(2) + (3 + 3) - 4 \\ = 6 + 9 + 6 - 4 \\ = { \boxed{ \boxed{17}}}`