Question

How to factorise 3x^2+15x-72

Answer 1

Answer:

Step-by-step explanation:

3x^2+15x-72=0

3x^2+24x-9x-72=0

3x(x+8)-9(x+8)=0

(3x-9)(x+8)=0.

x= 9 or -8

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