Hello, I need help on my Mathematics 30-1 Quiz 6.2 (Pre-calculus) Questions #1-#3

Value 6 PART A: MULTIPLE CHOICE/NUMERICAL RESPONSE This quiz includes multiple choice and numerical response questions. For multiple choice questions, select the best answer. For numerical response questions, enter the numerical values into the space provided. 1 . What are the first three terms in the expansion of (x + y) if the polynomial is written in descending order by degree of x? A. x' + 6x y+ 15x4y2 B. x" + 5x y' + 10xy' C. xy + 6x y'+ 15x4y+ D. x y+ 5x y' + 10xay+ Hint: Use the binomial theorem. 2. Which expression correctly identifies the number of terms in the expansion of (b + 3a?)? ent of bra A. e - 1 B. e+ 1 C. b - a D. bta Hint: What part of a binomial expression is related to the number of terms in the expansion? 3. Determine the constant term in the expansion of (2x + 3). A. 64 B. 530 C. 729 D. 1485 Hint: A constant term does not contain a variable