Which of the following equations has 2 as a root?
A. x2 – 4x + 5 = 0
B. x2 + 3x – 12 = 0
C. 2x2 – 7x + 6 = 0
D. 3x2 – 6x – 2 = 0
Answer:C
Which of the following equations has 2 as a root?
A. x2 – 4x + 5 = 0 B. x2 + 3x – 12 = 0 C. 2x2 – 7x + 6 = 0 D. 3x2 – 6x – 2 = 0
Explanation: If 2 is a root then substituting the value 2 in place of x should satisfy the equation.