Here's the question you clicked on:
kelsey1
f(x)=-x^2+5x+7 Find f(3a-4)
so wat am pose to be doing?
substitute 3a-4 to all the x in the equation
yes I know, but I'm not sure how to do that like can you show me the steps
f(x)=-x^2+5x+7 f(3a-4) = -(3a-4)^2 + 5(3a -4) + 7 Simplify the expression
|dw:1354855276611:dw| For the first term
Bro, the first term is negative
However there is a negative sign in fron of x so you have to multiply the first term with negative one.
Hero buddy, patience... lol
But anyway, the difficult part is done. Let the person finish it themselves.
I assume you'll have the idea to do the next ones from here on?
I know how to do foil and all the math yet are you solving for x or leaving it as a quadratic?
Nothing nowhere says to solve for x. In fact, when I posted the hint I gave you. I left a comment below saying to "simplify the expression". How did you interpret "solve for x" from that?
x becomes a, so x is out of the picture. if your asked to simplify the expression then I guess all you have to do is the equation hero did setup for you.
Well I meant "a" and my problem was that I thought I was solving for "a".
then I guess you're all set :)
@kelsey1, will you please just simplify the expression and let us know what you get?