As written, that equals 32a - 8, which factors to 8(4a - 1) If you meant 20a^2 + 12a - 8, that factors to 4(5a - 2)(a + 1)
12a + 6b + 9a + 14b =(12a + 9a) + (6b + 14b) =21a + 20b
12a + a - 3a = 10a
18
6(2a plus b)
As written, that equals 32a - 8, which factors to 8(4a - 1) If you meant 20a^2 + 12a - 8, that factors to 4(5a - 2)(a + 1)
12a + 6b + 9a + 14b =(12a + 9a) + (6b + 14b) =21a + 20b
It is: 12a+2 when simplified
-24
12a + a - 3a = 10a
13a
18
It multiplies out as: 12a-12+2 = 12a-10
That depends what the value of a is.
17a
13a
a2 + 12a + 27 = (a + 3)(a + 9)