3x2 -5x -4 solve it y completing the square method
Answers
Answered by
1
3x^2-5x-4 = 0
x^2 - (5/3)x -(4/3) = 0
(x)^2 - 2.(5/6).x + (5/6)^2 - (5/6)^2 -(4/3) = 0
{x-(5/6)}^2 = (4/3)+(25/36)
{x-(5/6)}^2 = 73/36
x = √73/6 + 5/6
x = +(√73+5)/6 & -(√73+5)/6
x^2 - (5/3)x -(4/3) = 0
(x)^2 - 2.(5/6).x + (5/6)^2 - (5/6)^2 -(4/3) = 0
{x-(5/6)}^2 = (4/3)+(25/36)
{x-(5/6)}^2 = 73/36
x = √73/6 + 5/6
x = +(√73+5)/6 & -(√73+5)/6
Similar questions