Explain the four-steps for solving quadratic equations. Can any of these steps be eliminated? Can the order of these steps be changed? Would you add any steps to make it easier, or to make it easier to understand?
Quadratic equations, which are expressed in the form of ax2 + bx + c = 0, where a does not equal 0, may have how many solutions? Explain why.
What is the quadratic formula? What is it used for? Provide a useful example, not found in the text.
Solve using the quadratic formula:
x² + 3x - 4 = 0