Question

Which is equal to 3[f(2x)] for f(x) = 3x^2+3/x?

a.15/2

b. 81/2

c. 9x^2+9/2

d.18x^2+9

Answer 1

is it (3x)^2 or 3(x)^2????

Answer 2

is the question correct!! coz' the options are not suiting it

Answer 3

@DHASHNI its 3x^2+3/2 i made some errors

Answer 4

is the left hand side correct

Answer 5

??

Answer 6

yes

Answer 7

is it (3x)^2 or 3(x)^2????

Answer 8

3(x)^2

Answer 9

then. as i already said
replace x by 2x and multiply the so obtained equation by 3
thats what the question means to do