Tuesday

November 25, 2014

November 25, 2014

Posted by **Shawn** on Sunday, November 30, 2008 at 6:22pm.

Okay so I did the following:

For f(of)g(x), take (2x+3) - (2x+3)^2

(insert g(x) where the "x" is in f(x) )

For g(of)f(x), take 2[x-x^2] +3

The first answer that I get for (2x+3) - (2x+3)^2 is -4x^2-12x-9

The second answer that I get for

2[x-x^2] +3 is 2x-2x^2+3

are these the answers to the problem?

- Algebra help -
**drwls**, Sunday, November 30, 2008 at 8:06pmYou did not subtract the terms correctly for f(of)g(x). You only did the (2x+3)^2 calculation.

Your g of f(x) is correct

- Algebra help drwls -
**Shawn**, Sunday, November 30, 2008 at 9:09pmfor f of g(x) I have -4x^2-10x-6

Is this right?

**Answer this Question**

**Related Questions**

college algebra - 1. answer the following for the given quadratic function f(x)=...

Algebra - If f(x)= ln x, g(x) = e^3x, and h(x) = x^7, find the following... a) (...

Algebra help - Find (fog)(x)and (gof)(x)if f(x)=x-x^2 and g(x)= 2x+3.

Algebra 2 - If f(x) = x-3 g(x) = 2x+5 find fog and gof

Composite Functions - f(x)=(7x+28)/(x-3) and g(x)=(3x+28)/(x-7) Find: (fog)(x) (...

math - Find a. fog b. gof c. fof d. gog f(x)=4-x g(x)=3x-5

math - Find a. fog b. gof c. fof d. gog for each function f(x)=4-x g(x)=3x-5

Math - Find (fog)(2) and (gof)(-2) f(x)=Square root of 4-x; g(x)=1-3x^2 Show ...

Calculus - Hi there, I need help with composition of functions. I need to find ...

Math - Find (fog)(2) f(x)=Squareroot 4-x; g(x)=1-3x^2 Find (gof)(-2) for the ...