exam Maths Puzzle Numerical Ability

Please solve the problem x(3x-7)-20=0. Can you include the steps?

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exam Other Question

A Cylindrical soup can is 4.2 inches in diameter and 6.7 in. high. What is the volume of the soup? Find the constant term that should be added to make the following expression a perfect-square trinomial.
x^2 � 6x