g (x) = (x + 7.5)^2?

Question

Does anybody know how these equations are done? Here are a few more examples:

g (x) = x^2 + 7.5
g (x) + (52x)^2
g(x) = -2x^2

Answer 1

(x+7.5)^2=x^2+2(x)(7.5)+(7.5)^2

Answer 2

If you have those functions just like that without any description or without knowing what to do with them, then they just give you the value of g(x) for different values of X.

From what i can see, i believe you those are functions that define some sort of a graph... Parabolic functions...

Check out this website:

http://www.coolmath.com/graphit/index.html

You have a graph drawer, just input the right part of the equation and it will draw the graph for you..

Hope this helps.

Answer 3

ya, they are simple mathematical functions,
tell what do u wanna do with these equations,,what i can find with the given equation is u can find the value of the function g(x) on different values of x....
i.e. giving x different values, and finding the value of g(x),
for example:
g(1) = (1+7.5)^2 = 8.5^2 = 72.25
similarly,
g(2) = (2+7.5)^2 = 9.5^2 = 90.25
etc..

Answer 4

The whole exercise wants you to know that everything in the bracket gets squared (where there is a bracket).