Question

Can someone help me please

Answer 1

Answer:

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

when x is 3:

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

Answer 2

Step-by-step 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.