Question

(3b+2)(5b-4)-(b-5)(3b+2)

Answer 1

(3b +2 )(5b - 4) - (b - 5)(3b + 2)

(15b^ - 12b + 10b -8) - (3b^ -2b -15b - 10)
(15b^ -2b -8) - (3b^ - 17b - 10)
15b^ - 2b - 8 - 3b^ + 12b +10
12b^ + 10b + 2 ______________(1)

by simplifying equation (1)
we get...

12b^ + 4b + 6b +2
4b(3b + 1) +2 (3b + 1)
(3b + 1) ( 4b + 2)
3b + 1 = 0 and 4b + 2 = 0
3b = -1 and 4b = -2
b = -1/3 and b = -2/4
b= -1/3 and b= -1/2

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