6
(3b - 1)(a - b)
3ab - a - 3b2 + b = -3b2 + 3ab + b - a = -3b(b - a) + 1(b - a) = (1 - 3b)(b - a)
(3b - 1)(a - b)
Divide by 6a: 6a(a + 3b)
(2a + b)(a + 3b)
No
-1
(3b + 7x)(3b + 7x) or (3b + 7x)2
(3b - 4)(3b - 4)
Oh, dude, you're hitting me with some math right off the bat! So, like, 3b squared minus 3b is basically 3b times b minus 3b, which equals 3b squared minus 3b. It's like the math version of a magic trick - it looks complicated, but it's just simplifying terms.
This expression can be factored. ab + 3a + b2 + 3b = a(b + 3) + b(b + 3) = (a + b)(b + 3)