Algebra-Finite Math

Question

Find the domain

a. f(x) = 1/x

b. f(x)= 3x+2/x+5

c. f(x)= 3x/x^2-4

Answer 1

^{a. All real numbers but x cannot be zero}

^{b. x can be all real numbers but x cannot be -5}

^{c. x can be all real numbers but x cannot be -2 or 2}