Jawabanmu

2014-09-05T20:39:08+07:00
A. (2x + 1) (3x + 5) => 6x^2 + 10x + 3x + 15 = 6x^2 +13x + 5
b. (a - 3) (2a + 5) => 2a^2 + 5a - 6a - 15 = 2a^2 - a - 15
c.
(p - 3) (p - 7) => p^2 - 7p - 3p + 21 = p^2 - 10p + 21
d.
(7p - 3) (8p + 7) => 56p^2 + 49p - 24p - 21 = 56p^2 + 25p - 21