Roots of Quadratic

Solve by factoring.
z² - 6z - 27 = 0

• z = 3 or z = 9

• z = 3 or z = -9

• z = -3 or z = 9

• z = -3 or z = -9

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3

• 2, 3

• 2, -3

• -2, -3

If the discriminant is equal to 0 the roots will be...

• Real, rational & equal

• Real, rational & different

• Real, irrational & different

• Non-real & different

The roots of 4x² - 1 = 0 will be

• Real, rational & equal

• Real, rational & different

• Real, irrational & different

• Non-real & different

The discriminant is...

• ax² + bx + c

• b² + 4ac

• b² - 4ac

• b - 4ac

If the discriminant is equal to -7 the roots will be...

• Real, rational & equal

• Real, rational & different

• Real, irrational & different

• Non-real & different

If the discriminant is equal to 49 the roots will be...

• Real, rational & equal

• Real, rational & different

• Real, irrational & different

• Non-real & different

• 2

• 1

• -1

• 0

If a quadratic equation has no real roots the value of the discriminant could be

• There are two real roots

• There is one one repeated root

• There are no real roots

• There are two rational roots