In Exercises 51–66, find
a. (fog) (2)
b. (go f) (2)
f(x)=4x-3, ...

Question

In Exercises 51–66, find 
a. (fog) (2)
b. (go f) (2) 
f(x)=4x-3, g(x) = 5x² - 2

Accepted Answer

Solve F m G F four and G f f f four or f of X is equal to X plus squared of X. G F X is equal to X squared. So we have f of G of 4 1st which you can be right like this. That just means we're going to take what we get for G f X plug it into the X of fx. Other words we want F of X square, which can be right, replacing all over X with X squared X squared plus a squared of X squared, which is X squared plus X simplified. Now we have our simplified equation, we're gonna plug in our fourth. What Spirit Plus four. That is equal to 20. Now you can do the same for gff before so you have gff before sequel to G of X plus squared of X. Chicken. Right, experts squared of X squared to expand this exponent we will end up with X squared plus two X squared of X plus X. Now we'll plug in our four, four squared plus two times four times square to four plus four gives us 16. Here plus four is +22 times two is +44, 16 Plus another four which gives us 36 notice our answers are 20 and 36. This means the answer to our problem is answer a Okay, I hope to help you solve the problem. Thank you for watching. Goodbye

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In Exercises 51–66, find a. (fog) (2) b. (go f) (2) f(x)=4x-3, g(x) = 5x² - 2