2 2 * 。 - 11. Look for the equivalent rational algebraic expression of each of - Q+1 b+1 and if the a b LCD is ab. ab+1 abb A. ab+b abta ab с. ab ab ab ab-a ab-1 B. ab-b ab-a ab D. ab ab ab 12. Write as one fraction and simplify 2 x+1 x²+x+2 A. x²-x-2 C. (x - 1)(x+1) (x-1)(x+1) x²-x+2 B. x²+x-2 D. (x-1)(x+1) (x-1)(x+1) 13. Find the truth about similar rational algebraic expressions among the following statements. A. The expressions have prime numerators B. The expressions have prime denominators C. The expressions have the same numerators. D. The expressions have the same denominators.​