Question

39. How many terms are there in the
expansion of
(1 + 2x + x2)5+ (1 + 4y + 4y2) ?
-21 (2) 12
(c) 21
(d) 22​

Answer 1

$(1 + 2x + x \times 2) \times 5 + (1 + 4y + 4y \times 2)$

$(1 + 2x + 2x) \times 5 + (1 + 4y + 8y)$

$(1 + 4x) \times 5 + (1 + 12y)$

$5 + 20x + 1 + 12y$

$6 + 20x + 12y$

Answer 2

Answer:

21.…...its is a quick and correct answer