28+ X^2+X+1 Background. Examples of valid and invalid expressions. The famous equation x^2=2^x (all solutions!)
Solve by cross multiplying as the first step. Add (1/4) to both sides It shouldn't matter whether you use the quadratic formula or complete the square.
It shouldn't matter whether you use the quadratic formula or complete the square.
X^2 + x + 1 = 0. Examples of valid and invalid expressions. Here, let me show you what happens when completing the square. It shouldn't matter whether you use the quadratic formula or complete the square.