evaluate the indicated function for f(x)=x^27 and g(x) =x2
Mathematics
eileennathan
Question
evaluate the indicated function for f(x)=x^27 and g(x) =x2
1 Answer

1. User Answers mkarikari1850
Answer:
f(g(x))=(x2)^2  7
(x2)(x2)  7
x^22x2x+47
x^24x3
g(f(x))=x^227
x^29
(x+3)(x3)
Stepbystep explanation:
 to solve for f(x), replace x with the g(x).
 since we don't multiply a bracket with the negative or the positive signs to the
 exponent, you have to factor into two binomials.
 use the FOIL method to eliminate the brackets.
 add liketerms
 to find g(x), replace x with the f(x).
 add liketerms
 since there's difference of square, factor them into two binomials