Question

if f(x)=3x^2+9x-10 find and simplify f(2+x)

Answer 1

Put x=2+x in place of x in given equation & solve it

Answer 2

so 3(2+x)^2+9(2+x)-10?

Answer 3

Yes Just proceed with this

Answer 4

do i square everything the the parentesees?

Answer 5

ok i got 3x^2+21x-20

Answer 6

Use (x+y)^2= x^2+y^2+2*x*y

Answer 7

i got 3x^2+21x+20 after i simplified is that correct?

Answer 8

It will be +20 instead of -20

Answer 9

Yes

Answer 10

thanks!!

Answer 11

Welcome :)