Answers

2014-06-25T14:40:47+08:00
2x(x-6) = 5
2x² - 12x = 5 
DIVIDE THE WHOLE EQUATION BY 2:
x² - 6x = 5/2
COMPLETE THE SQUARE:
x² - 6x + 9 = 5/2 + 9
(x + 3)² = 23/2
x + 3 = +/-√23/2

x₁ = + √23/2 - 3      ANSWER                            x₂ = -√23/2 - 3       ANSWER
0