ESO / Batxillerat
Quadratic equations
A quadratic equation has the form ax² + bx + c = 0. Use the quadratic formula and the discriminant to see how many real roots there are. We pair the Super Campus video with ESO and PAU-style drills.
Exercises
- Solve x² - 5x + 6 = 0
- How many solutions does x² + 2x + 5 = 0 have?
- Write an equation with roots 2 and -3
FAQ
When can I skip the formula?
When factoring is obvious. Otherwise use the formula.
Does this appear in PAU?
Yes, inside functions and problems. We drill it in Tortosa.