We just replace the "x" with the starting number (in this case "3").
[tex]f(3) \: = \: 2(3) ^{2} \: + \: 5 \sqrt{3 \: - \: 2} [/tex]
[tex]f(3) \: = \: 2 \: \times \: 9 \: + \: 5 \sqrt{1} [/tex]
[tex]f(3) \: = \: 18 \: + \: 5 \: \times \: 1[/tex]
[tex]f(3) \: = \: 18 \: + \: 5[/tex]
[tex]f(3) \: = \: \boxed{ \bold{23}}[/tex]
Answer:
f(3)=23
Step-by-step explanation:
f(x) = 2x² +5√(x-2)
Plug in 3 for all the x values.
f(3)=2(3)^2 +5√(3-2)
f(3)=2(9)+5√(1)
Next multiply 2 and 9
Remember the square root of 1 is 1.
f(3)=18+5(1)
5*1=5
f(3)=18+5=23
f(3)=23
Hope this helps!
If not, I am sorry.
