Quadratic Formula

Test yourself on Quadratic Formula

• What is the correct equation for the quadratic formula?

• The quadratic formula is $\frac{-b \pm \sqrt{b^2-4ac} }{2a}$ . For the equation x²+3x+6 what is a?

• The quadratic formula is $\frac{-b \; \pm \; \sqrt{b^2-4ac} }{2a}$ . For the equation 3x²+6x+10 what is c?

• To solve 2x² + 3x + 1 using the quadratic formula what should your first line of working be?

• To solve x² + 10x + 3 using the quadratic formula what should your first line of working be?