8b -2a
When simplified it is: 2a+8b+4
2a+(-11b)
(2a+1)(a+1)
With the factor 4a plus 8b 16c you can find the answer and check it mentally. You would first have to find he product of all the numbers to find the value of the letter A.
8b -2a
3a + (3b - 2a) + 5b =3a + 3b - 2a + 5b =(3a - 2a) + (3b + 5b) =a + 8b
6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b
When simplified it is: 2a+8b+4
2a+(-11b)
(2a+1)(a+1)
With the factor 4a plus 8b 16c you can find the answer and check it mentally. You would first have to find he product of all the numbers to find the value of the letter A.
(8b + 7)(7b + 9)
8b^2 -9b +1 8b^2 -8b -b +1 8b(b-1) - 1(b-1) (8b-1)(b-1)
4(a + 2b - 4c)
One of the factors is 3x + 8b. The other is 9x^2 -24xb + 64b^2
8878