exam Maths Puzzle Numerical Ability

Suppose that four times the square of a number equals 20 times that number. what is the number?

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exam Other Question

Tell wether the ordered pair is a solution of the linear system.

(1, -1);
2x - y = 3
4x + 2y =2, a simple yes or no would be suffice

Any straightfoward</u> and correct</u> help would be much obliged:) Solve by using the quadratic formula. x^2 = 5x + 8