Answer:
The answer to your question is all of them
Step-by-step explanation:
I think all the methods listed here can help to solve quadratic equations.
Type of method Example
By factoring x² + 5x - 6 = 0 (x + 6)(x - 5) = 0
By graphing see the graph below
Square roots x² - 18 = 0 x = ±√18
Completing the square x² + 12x + 32 = 0 x² + 12x + (6)²= -32 + (6)²
Quadratic formula [tex]\frac{-b +- \sqrt{b^{2} -4ac} }{2a}[/tex]
