1
QuizMultiple Choice
The Quadratic Formula
Question 1 of 10 • Mathematics III A
Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?
Answer
A
1 plus-or-minus StartRoot 21 EndRoot i
B
Negative 1 plus-or-minus StartRoot 19 EndRoot i
C
1 plus-or-minus 2 StartRoot 19 EndRoot i
D
1 plus-or-minus StartRoot 19 EndRoot i