3/19 Quadratic Formula

3/19 Quadratic Formula

-What does the discriminant tell us?

Multiple Choice

The discriminant is...

• $\sqrt{b^2-4ac}$

• $b^2-4ac$

• $\frac{\left(-b\pm\sqrt{b^2-4ac}\right)}{2a}$

• $ax^2+bx+c$

Multiple Choice

If    $b^2-4ac\ >0$  ...  

• There is ONE solution

• There will be TWO solutions

• There are NO real solutions

Multiple Choice

If    $b^2-4ac\ =0$  ...  

• There is ONE solution

• There will be TWO solutions

• There are NO real solutions

Multiple Choice

If    $b^2-4ac\ <0$  ...  

• There is ONE solution

• There will be TWO solutions

• There are NO real solutions

Multiple Choice

Given the equation $7x^2+2x+5=0$  determine the number of solutions without fully solving.

• 1 solution

• 2 Solutions

• No Real Solutions

Multiple Choice

Do you know what the Q3 project is?

• yes

• no

Would you like extra practice with the quadratic formula and discriminants?

Go to deltamath.com and find the assignment: "Quadratic Formula Extra Practice"