What are the roots of the quadratic equation x^2 - 5x + 6 = 0 ?a.x = -2, x = -3b.x = -2, x = 3c.x = 2, x = -3d.x = 2, x = 3
Question
What are the roots of the quadratic equation x^2 - 5x + 6 = 0
?
a. x = -2
, x = -3
b. x = -2
, x = 3
c. x = 2
, x = -3
d. x = 2
, x = 3
Solution
The roots of the quadratic equation x^2 - 5x + 6 = 0 can be found using the quadratic formula, which is x = [-b ± sqrt(b^2 - 4ac)] / (2a).
Here, a = 1, b = -5, and c = 6.
First, calculate the value under the square root, b^2 - 4ac = (-5)^2 - 416 = 25 - 24 = 1.
Then, calculate the two possible values for x:
x1 = [-(-5) + sqrt(1)] / (21) = (5 + 1) / 2 = 3 x2 = [-(-5) - sqrt(1)] / (21) = (5 - 1) / 2 = 2
So, the roots of the equation are x = 2 and x = 3. Therefore, the correct answer is d. x = 2, x = 3.
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