Algebra 2B U2 L6 Functions Operations Practice #1-3
Let f (x) = 2x^2+x-3 and g (x) = x-1. Perform the indicated operation, then find the domain
1 (f-g) • (x)
A x^2-4; domain:positive real numbers
B 2x^2-4; domain:all real numbers
C x^2-4; domain:all real numbers
D 2x^2-2; domain:all real numbers
2 (f•g) (x)
A 2x^3-x^2-4x+3; domain:all real numbers
B 2x^3+x^2-3x; domain:all real numbers
C 2x^3+x^2+4x-3; domain:negative real numbers
D 2x^2+x-3x+3; domain:positive real numbers
3 f/g (x)
A 1/2x+3; domain:all real numbers except x=-3/2
B 2x+3; domain:all real numbers
C 2x^2+3; domain:all real numbers
D 2x+3; domain:all real numbers except x=1
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