Quiz about quadratic equations

Question 1

The solutions of the quadratic equation
x²-5x+6=0 are

Accepted Answer

x=3 or x=2

Answer

x=1 or x=-6

Answer

x=-3 or x= 2

Answer

x=-1 or x=6

Question 2

In the quadratic formula, if b²-4ac>0, then the quadratic equation has

Accepted Answer

two different real solutions

Answer

two imaginary solutions

Answer

two equal real solutions

Answer

none of these

Question 3

In the quadratic formula, the expression
b²-4ac is called

Accepted Answer

discriminant

Answer

discrim

Answer

determinant

Answer

none of these

Question 4

In the expression 4x²-5x+9 the leading coefficient is

Accepted Answer

4

Answer

9

Answer

-5

Answer

-4

Question 5

The solution of the quadratic equation
4x²-5x-9=0 are

Accepted Answer

x=-1 or x=9/4

Answer

x=1 or x=9/4

Answer

x=2 or x=3

Answer

x=-2 or x=-3

Question 6

One solution of the quadratic equation
x²-7x+12=0 is

Accepted Answer

x=3

Answer

x=2

Answer

x=-3

Answer

x=-2

Question 7

Fill the blank space to complete the perfect square trinomial
x²-18x+____=(x- ____)²

Accepted Answer

81 and 9 respectively

Answer

9 and 3 respectively

Answer

-9 and -3 respectively

Answer

-81 and -9 respectively

Question 8

Which of the followig trinomial is perfect square trinomial?

Accepted Answer

x²-22x+121

Answer

x2+4x+9

Answer

x²-22x-121

Answer

x2+4x-9

Question 9

The graph of a quadratic function is called

Accepted Answer

a parabola

Answer

a line

Answer

a hyperbola

Answer

a cubic

Question 10

3x² - 4 is a quadratic

Accepted Answer

true

Answer

false

Question 11

What are the green dots called?

Accepted Answer

roots or x-intercepts

Answer

axis of symmetry

Answer

vertex

Answer

parabola

Question 12

What are the x- intercepts?

Accepted Answer

x= 0 and x= 4

Answer

x= 0 and x= -4

Answer

y= 0

Answer

x= 2

Question 13

What is the equation for this parabola in factored form?

Accepted Answer

y=(x+2)(x-1)

Answer

y=(x-2)(x+1)

Answer

y=(x-2)(x-1)

Answer

y=(x+2)(x+1)

Question 14

If the discriminant is greater than zero, the equation has

Accepted Answer

2 solutions

Answer

1 solution

Answer

no solutions

Question 15

The equation
y = x² -12x + 36 has

Accepted Answer

1 solution

Answer

2 solutions

Answer

no solutions

Question 16

Find the roots of this equation
x²+ x - 6 = 0

Accepted Answer

3, -2

Answer

4, -1

Answer

-6, 1

Answer

2, -3

Question 17

Solve the equation by factoring.

Accepted Answer

x = {-5,-3}

Answer

x = {5,-3}

Answer

x = {-5,3}

Answer

x = {5,3}

Question 18

How many solutions can a quadratic have?

Accepted Answer

1 solution

Accepted Answer

0 solutions

Accepted Answer

2 solutions

Answer

3 solutions

Question 19

Solve the equation using the quadratic formula.

4x² +9x = 12x

Accepted Answer

x = {0, 3/4}

Answer

x = {0, -3/4}

Answer

x = {0, 4/3}

Answer

no solution

Question 20

What is the equation for standard form?

Accepted Answer

y = ax²+ bx + c

Answer

y = x²+ bx + c

Answer

y = mx + b

Answer

Ax + By = C

Question 21

Factor x²-6x-40

Accepted Answer

(x-10)(x+4)

Answer

(x+10)(x-4)

Answer

(x-8)(x+5)

Answer

(x+8)(x-5)

Question 22

Solve
x² + 13x + 12 = 0

Accepted Answer

x = -12, -1

Answer

x = 12, 1

Answer

x = 13, 1

Answer

x = -13, -1

Question 23

Factor x²-11x+24

Accepted Answer

(x-3)(x-8)

Answer

(x-2)(x-12)

Answer

(x+3)(x+8)

Answer

(x+2)(x+12)

Question 24

Solve the following quadratic equation...

x² + 3x + 2 = 0

Accepted Answer

x = -1

x = -2

Answer

x = 1x = 2

Answer

x = -1

x = 2

Answer

x = 1

x = -2

Question 25

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

Accepted Answer

Make it equal 0 by subtracting 3 on each side

Answer

Get factored form

Answer

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

Answer

Type it all in a calculator.

Question 26

Solve the following for x by using the Quadratic Formula

2x²+6x=7

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

quadratic equations

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