exam Maths Puzzle Numerical Ability

By factoring, find the roots of the following equation:

(15a^2b^2c^2 - 6ab^2c + 3a^2bc^2) 3abc

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exam Other Question

Find all solutions of the equations in the interval [0, 2π) algebraically.

sec�x � secx = 2 Sam found a number of nickels, dimes, and quarters in his room. He found three more dimes than nickels but twice as many quarters as dimes. The total value of the coins was $5.05. How many coins of each type did Sam find?