Question

20. Solve by using quadratic formula : x2-3x+1=0.​

Answer 1

Answer:

x² - 3x + 1 = 0

Here,

a = 1

b = -3

c = 1

Now, by quadratic formula ---

x = {-b ± √(b² - 4ac)} /2a

= [-(-3) ± √{(-3)² - 4×1×1}]/2×1

= { 3 ± √ (9 -4)}/2

= (3± √5) /2

x = (3+√5)/2 or x = (3-√5)/2