(3+b)b =180
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b^2 + 3b = 180
b^2 +3b - 180 = 0
b^2 +15b - 12b - 180 = 0
b(b+15) - 12(b+15)= 0
(b+15)(b-12)= 0
Either b=12 or b= -15
HOPE IT HELPS YOU!!
b^2 +3b - 180 = 0
b^2 +15b - 12b - 180 = 0
b(b+15) - 12(b+15)= 0
(b+15)(b-12)= 0
Either b=12 or b= -15
HOPE IT HELPS YOU!!
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