00:01
We're given two functions, f of x and g of x.
00:03
And we have four values or four expressions that we want to find the value.
00:11
Okay, first expression, our first function is f plus g of 7.
00:21
So we know that since f of x plus g of x equals x plus 7 plus x squared.
00:32
Okay.
00:35
F plus g equals f of x plus g equals f of x plus g equals x plus x plus x equals x plus 7 plus x squared.
00:42
So f plus g of 7 is 7 plus 7 plus 7 squared.
00:59
Answer is 63.
01:06
For part b, find f minus g of 7.
01:16
Okay, so f minus g is equivalent to f of x minus g of x.
01:24
So we have x plus 7 minus x squared.
01:31
Therefore, f minus g of 7 is 7 plus 7 minus 7 squared.
01:39
So 14 minus 7 squared, which is negative 35.
02:10
Per c, we have f times g of 7.
02:21
So f times g equals f of x times g of x...
