Correct option is C
Given:
The quadratic equation is:
6x2−x−2=0
Formula Used:
To find the roots of a quadratic equation ax2 + bx + c = 0, we use the quadratic formula:
x=2a−b±b2−4ac
Where:
- a is the coefficient of x2,
- b is the coefficient of x,
- c is the constant term.
Solution:
1. Identify the coefficients:
From the given equation 6x2 - x - 2 = 0:
a = 6, b = -1, c = -2
2. Substitute into the quadratic formula:
x=2(6)−(−1)±(−1)2−4(6)(−2)
Simplify step-by-step:
x=121±1−4(6)(−2)
x=121±1+48
x=121±49
3. Simplify the square root:
x=121±7
4. Find the two roots:
For x = 121+7
x = 128=32
For x = 121−7:
x = 12−6=2−1
Final Answer:
The roots of the quadratic equation are:
x=32, x=2−1