What are the roots of the quadratic equation x^2 - 4 = 0?

A. 2 AND -2
Posted in:  Quadratic Equations -  Algebra -  Mathematics

B is ranked 15th from the bottom in a group of 40 people. What is B's rank from the top?

B. 26TH

For the quadratic equation 2x^2 - 4x + k = 0 to have real roots, what must be the condition on k?

C. K ? 8
Posted in:  Quadratic Equations -  Algebra -  Mathematics

If the pattern is 1, 2, 4, ?, 16, what number should replace the question mark?

B. 8

Author is to Book as Painter is to __________.

B. ART