(2b - 5)(b + 7)
(a - 2b)(2a - b)
There are no like terms here.
(a + 2b)(a + 2b)
It is: 2b squared
This is not a difficult factorisation, as it is merely a normal factorisation with "a" stuck on the end of each number. 25a(2) - 20ab + 4b(2) (2b-5a)(2b-5a) This is: 2bx2b=4b(2) 2bx-5a=-10ab (twice) -5ax-5a=25a
-8
2a
5b + 11 - 2b = 3b + 11
2b
7a-2b
20a plus 14 will be 34a minus 8a minus 7 34a minus 8 is 26a minus 7 is 19a. The single b is 1b plus 6b which is 7b minus 2b equals 5b.
-2bk2 + 6bk - 2b = -2b(k2 - 3k + 1)