3/19 Quadratic Formula Lesson

3 Slides • 6 Questions

1

3/19 Quadratic Formula

-What does the discriminant tell us?

2

3

Multiple Choice

The discriminant is...

1

$\sqrt{b^2-4ac}$

2

$b^2-4ac$

3

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

4

$ax^2+bx+c$

4

Multiple Choice

If $b^2-4ac\ >0$ ...

1

There is ONE solution

2

There will be TWO solutions

3

There are NO real solutions

5

Multiple Choice

If $b^2-4ac\ =0$ ...

1

There is ONE solution

2

There will be TWO solutions

3

There are NO real solutions

6

Multiple Choice

If $b^2-4ac\ <0$ ...

1

There is ONE solution

2

There will be TWO solutions

3

There are NO real solutions

7

Multiple Choice

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

1

1 solution

2

2 Solutions

3

No Real Solutions

8

Multiple Choice

Do you know what the Q3 project is?

1

yes

2

no

9

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

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

3/19 Quadratic Formula

-What does the discriminant tell us?

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