Math, asked by milleechug65, 1 year ago

factorise 12b +15-3b³

Answers

Answered by dsr01

5

=> 12b + 15 -3b²

=> -3b² + 12b + 15

=> -3b² + 15b - 3b +15

=> -3b(b-15) -3(b-15)

=> (b-15) (-3b-3)

=> b = 15 or b = -1

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