Question

Solve, using the quadratic formula: 2x2 - 3x + 1 = 0
Answer

{1, 0.5}

{2.4, -0.9}

{-1, -0.5}

{-2.4, 0.9}

Answer 1

Ok. now for the quadratic formula -

comparing with ax^2+bx+c = 0,

a = 2, b = -3 and c = 1

b2-4ac = (-3).(-3) -4.2.1
=> 9-8 = 1

Hence root of b2-4ac = 1

Hence x = -b +/- 1/ 2a

=> 3 +/-1 / 4

=> 4/4 or 2/4

=> 1 or 0.5 is the answer.

Answer 2

thank you !

Answer 3

yep no probs; just a new person here :)