Type yоur аnswers in descending pоwers оf the vаriаble. Use ^ to indicate exponents. For part d, type the numerator inside parentheses and the denominator inside parentheses. Use / for the fraction bar. Type the domain in interval notation. Use oo for infinity. Use U to indicate the union of the sets for the domain. Do not space.* Let and . Find each of the following: a) b) c) d) Domain: