exam Maths Puzzle Numerical Ability

Factor completly

3 X cubed - 27 X squared + 60 X

I need step by step instructions please

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exam Other Question

The sum of two consecutive integers is 145. Find the two
integers. solve for log 5 x = 4 x+3
I'm confused with the way to solbe it. do I solve for base x log 5 and x+3 log 4. but then I don't know what else to do