Question

How do you find the compositions given f(x)=−3x+5, g(x)=1+2x−x2?

Answer 1

Solution of first question:

f(x)  =  -3x+5

Let f(x)  =  0

-3x+5 = 0

-3x  =  0-5

-3x  = -5

x  =  -5/-3

x  =  5/3

f(5/3)  =  -3*5/3+5

f(5/3)  =  -5+5

f(5/3)  =  0

Hence, f(5/3)  = 0  is the value of given polynomial.

Step-by-step explanation: