Question 1
Open practiceIf the roots of the quadratic equation 2x² – 7x + k = 0 are equal, then what is the value of k?
A
A: 12.25
B
B: 49/8
C
C: 24.5
D
D: 14
Answer and explanation
Correct Answer: B — B: 49/8
For equal roots, discriminant (D) = 0. Here, D = b² – 4ac. Substitute a = 2, b = –7, c = k and solve.