Interactive multiple-choice quiz: Quadratic formula and discriminant quiz - Reveal

A

a = 4, b = -8, c = 3

B

a = 4, b = -8, c = -3

C

a = 4, b = 8, c = 3

D

a = 4, b = 8, c = -3

A

-1.5 or 5

B

No Solution

C

-5 or 1.5

D

0.7 or 5

A

x = 7/2, x = -6

B

x = -5/2, x = 5

C

x = -3/7, x = 6

D

x = -5/2, x = 7

A

16

B

-8

C

8

D

-24

A

Get factored form

B

Write down: a=1, b=6, c=-13

C

Make it equal 0 by subtracting 3 on each side

D

Type it all in a calculator.

A

ax² + bx + c

B

b - 4ac

C

b² - 4ac

D

b² + 4ac

A

1 Rational Solution

B

2 Rational Solutions

C

No solutions

D

2 Complex Solutions

A

\(\frac{-3 \pm i \sqrt{51}}{10}\)

B

\(\frac{-3 \pm \sqrt{69}}{10}\)

C

\(\frac{3 \pm \sqrt{69}}{2}\)

D

\(\frac{-3 \pm 3 \sqrt{23}}{10}\)

A

\(3 \pm \sqrt{5}\)

B

\(3 \pm \sqrt{20}\)

C

\(3 \pm i \sqrt{13}\)

A

Positive

B

Negative

C

Zero

D

Not Sure

A

76

B

-7

C

9

D

none of these

A

76

B

29

C

68

D

none of these

A

-39

B

42

C

-41

D

none of these

A

one real solution

B

two real solutions

C

no real solutions

D

one imaginary solution

A

0

B

1

C

2

D

5

A

0

B

1

C

2

D

3

A

-2 and 3

B

-1/2 and -6

C

-2 and -6

D

3 and -6

A

2 real solutions

B

2 imaginary solution

C

1 solution

D

3 solutions