Quadratic Equation Class 10 Notes Chapter 4 - BYJUS
Solution: Given, x 2 - 5x + 6 = 0 is the quadratic equation. On comparing with standard quadratic equation we have; ax 2 + bx + c = 0 a = 1, b = -5 and c = 6 Since, b 2 - 4ac = (-5) 2 - 4 × 1 × 6 = 25 - 24 = 1 > 0 Hence, the roots are real. Using quadratic formula, x = [-b ± √ (b 2 - 4ac)]/ 2a = [- (-5) ± √1]/ 2 (1) = [5 ± 1]/ 2