# Math Help - Rearrange and solve

1. ## Rearrange and solve

x^2 = 4x + 1

2. Originally Posted by Joker37
x^2 = 4x + 1
Rearranging, you should get $x^2-4x-1=0$.

To solve, you need to use the quadratic formula : $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

3. Can you show me how to solve the quadratic equation using completing the square?