SOLUTION: The function g is defined by g(x)=x^2-2x Find g(2a) The part where I should simplify is what I do not understand. what I did is: g(2a)=(2a)^2-2(2a) g(2a)=4a

Question 1047329: The function g is defined by g(x)=x^2-2x Find g(2a)

The part where I should simplify is what I do not understand.
what I did is: g(2a)=(2a)^2-2(2a)
g(2a)=4a-4a
g(2a)=0

Another tutor answered my question and he said the answer was: g(2a)=4a^2-4a
He did not explain how he go the answer so I am still so very confused.
Found 3 solutions by josgarithmetic, ikleyn, advanced_Learner:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
The part where I should simplify is what I do not understand.
what I did is: g(2a)=(2a)^2-2(2a)

Answer by ikleyn(52777)   (Show Source): You can put this solution on YOUR website!
.
The function g is defined by g(x)=x^2-2x Find g(2a)
~~~~~~~~~~~~~~~~~~~~~~`

g(2a) = (2a)^2 - 2*(2a) = 4a^2 - 4a.

Answer by advanced_Learner(501)   (Show Source): You can put this solution on YOUR website!
=
= notice the square
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