Practice With the Quadratic Formula

If the discriminant is positive, then the equation will have...

• one real solution

• two real solutions

• no real solutions

• one imaginary solution

Identify the values of A, B, and C

• A=1, B=7, C=-20

• A=10, B=7, C=20

• A=10, B=-7, C=-20

• A=10, B=7, C=-20

Which example below uses the quadratic formula correctly?

• No Solution, because of the negative under the square root.

• No Solution, because there is a negative under the square root.

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.