SOLUTION: Factor completely. If a polynomial is prime, state this 15t^2 + 20t- 75 help me with this

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Question 323942: Factor completely. If a polynomial is prime, state this
15t^2 + 20t- 75 help me with this
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
15t^2 + 20t- 75
5(3t^2+4t-15)
5(3t^2+9t-5t-15)
5(3t(t+3)-5(t+3))
5(t+3)(3t-5)