Question

3) If the root of the given quadratic equation are real and equal then find the value of 'k' x² + 2x + k = 0
A)1 B) -1 C) 2 D)-2
4 What is the value of discrimmant for the quadratic equation
X2-2X-3=0?
A) -16 B) 16 C) 8 D) 4​

Answer 1

∆=d²- 4ac ...... (formula ) -2 - 4 ×1×3 = 4+12 =16