How do you solve #x^2-4x=10# by completing the square?
1 Answer
May 17, 2015
Solution is x=2
To make a perfect square on the left side, take half the coefficient of x and then square it. Here half of -4 is -2 and its square would be 4. Now add this number on both sides of the equation. On the left side it would now be a perfect square.
x-2=
x=2
