exam Maths Puzzle Numerical Ability

I am trying to remember how to factor a problem, can you help me?

Factor completely:
x^3 � 2x^2 + 7x � 14

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exam Other Question

what is 3.75 rounded to the nearest tenth Lauren wants to mix 5 liters of 7% milk with skim-milk (0% fat) to profud a mixture of 2 46/47% milk. How much skim-milk should Lauren add?