Question

12b + 15 - 3b² factorise​

Answer 1

Answer:

Step-by-step explanation:

Hey, here is your answer:-

-3 (b-5) (b+1)

Answer 2

=> 12b + 15 -3b²

=> 12b + 15 -3b²=> -3b² + 12b + 15

=> 12b + 15 -3b²=> -3b² + 12b + 15=> -3b² + 15b - 3b +15

=> 12b + 15 -3b²=> -3b² + 12b + 15=> -3b² + 15b - 3b +15=> -3b(b-15) -3(b-15)

=> 12b + 15 -3b²=> -3b² + 12b + 15=> -3b² + 15b - 3b +15=> -3b(b-15) -3(b-15)=> (b-15) (-3b-3)

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