Question 611159
1. Which of the following is a quadratic equation that has roots of 2 1/2 and 2/3?
 A) 5x^2 + 11x - 7 = 0
 B) 6x^2 - 19x + 10 = 0
 C) 5x^2 + 11x - 10 = 0
 D) 6x^2 + 19x - 10 = 0
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(x - 5/2)*(x - 2/3) = 0
(2x - 5)*(3x - 2) = 0
{{{6x^2 - 19x + 10 = 0}}}
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14. Solve by completing the square x2 - 6x - 4 = 0.
{{{x^2 - 6x = 4}}}
{{{x^2 - 6x + 9 = 4 + 9}}}
{{{(x-3)^2 = 13}}}
{{{x = 3 + sqrt(13)}}}
{{{x = 3 - sqrt(13)}}}
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21. Solve by completing the square x2 - 2x - 5 = 0.
Same as #14
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25. Solve by completing the square 3x2 - 8x - 6 = 0
Divide by 3, then same as #14
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26. Solve the quadratic equation x2 + 8x + 12 = 0
*[invoke solve_quadratic_equation 1,8,12]