8b^2 -9b +1 8b^2 -8b -b +1 8b(b-1) - 1(b-1) (8b-1)(b-1)
b^2 + 8b + 7 factors to (b + 7)(b + 1)
8b = -65 so b = -8.125
8b
(b-4) squared
8b^2 -9b +1 8b^2 -8b -b +1 8b(b-1) - 1(b-1) (8b-1)(b-1)
What I would do is change the problem up. Instead of b-9b I would make it -(9b-b). It is still the same problem; you will multiply the number inside the parenthesis be -1. So start with 9b-b. That would equal 8b. So it would change from -(9b-b) to -(8b) so you multiply 8b by negative 1 (-1) to get the answer -8b. -8b is your answer. So b - 9b = -8b
b^2 + 8b + 7 factors to (b + 7)(b + 1)
8b = -65 so b = -8.125
8b
8B
6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b
If you mean 8b+4b = 56-16b then the value of b works out as 2
b stands for black. 8b is blacker (softer) than 6b.
b(b - 8)
5b2 = 8b therefore 5b =8 therefore b = 1.6
b(6a-8) if you are factoring