studenthelp143
Mar 28, 2011, 06:47 PM
Need detailed steps and solutions using the indian method.
Thanks
jcaron2
Mar 28, 2011, 08:01 PM
x^2-2x-3=0
First, move the constant term to the right side of the equation:
x^2-2x=3
Now multiply everything by four times the original coefficient of the x^2 term (i.e. 4 x 1 = 4):
4x^2-8x=12
Next, add the square of the original coefficient of x to both sides (i.e. [-2]^2=4):
4x^2-8x+4=16
This makes the left side of the equation a perfect square. So now you can take the square root of both sides:
\sqrt{4x^2-8x+4}=\sqrt{16}
\sqrt{(2x-2)^2}=\sqrt{16}
2x-2=\pm 4
x=-1 or x=3