Practice with Undefined Algebraic Fractions Topic Index | Algebra Index | Regents Exam Prep Center
Find the value for x that makes these fractions undefined:
Choose:
Explanation Set the denominator = 0 and solve. 2x - 4 = 0 2x = 4 x = 2 CHECK: The correct choice is 2 since 2(2) - 4 = 0.
Explanation Set denominator = 0 and solve. 10 - 2x = 0 10 = 2x 5 = x CHECK: The correct choice is 5 since 10 - 2(5) = 0.
Explanation Set denominator = 0 and solve. 6x = 0 x = 0 CHECK: The correct choice is 0 since 6(0) = 0.
Explanation Set denominator = 0 and solve. 3x - 1 = 0 3x = 1 x = 1/3 CHECK: The correct choice is 1/3 since 3(1/3) - 1 = 0.
Explanation Set denominator = 0 and solve. x² - 5x - 14 = 0 (x + 2)(x - 7) = 0 x = -2; x = 7 CHECK: (-2)² -5(-2) - 14 = 0 CHECK 7² - 5(7) - 14 = 0 CHECK
