exam Maths Puzzle Numerical Ability

Solve for all values of b that make the trinomial a perfect square.

9-bx+9x^2

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exam Other Question

Thomas Jefferson High School has 4 grades (9-12). You know the following facts:
a. There are 1800 students in grades 9-12.
b. There are twice as many freshmen as there are jun One of two positive numbers exceeds 4 times the other number by 4. One-third of the larger exceeds one-half of the smaller by 8. Find both numbers.