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Quadratic Equation

Total questions: 20

Worksheet time: 3600secs

Name
Class
Date
1.
Roots of the quadratic equation of the type ax2  + bx = 0 is _____
a)
x = 0 
b)
ax + b = 0 
c)
x = 0 and ax + b = 0
d)
Not possible to find
2.
The Equation (x2 + 1)2 - x2 = 0 has ___
a)
four real roots
b)
two real roots
c)
no real roots
d)
one real root
3.
a)
a)
b)
b)
c)
c)
d)
d)
4.
Solve the equation by factoring:
x2 + x - 20 = 0
a)
x = -5 and 4
b)
x = 4 and 5
c)
x = 5 and -4
d)
x = -4 and -5
5.

Solve the equation by factoring:

x2 + 13x + 40 = 0

a)

-8, 5

b)

-40, -1

c)

5, 8

d)

-8, -5

6.

Which of the following is a quadratic equation?

a)

3s2+s43s^2+s–4  

b)

m28m1=0m^2–8m–1=0  

c)

2x1=52x–1=5  

d)


5y2+4y75y^2+4y\ge7  

7.

In the quadratic equation 2x2 – 9x – 5 = 0, which is the linear term?

a)

2x2

b)

x2

c)

– 9x

d)

– 5

8.
What are the zeros?
a)
x= 0 and x= -4
b)
x= 0 and x= 4
c)
y= 0
d)
x= 2
9.
Find the zeros of the quadratic equation y=4(x+9)2-36
a)
x=-9+√6 & x=-9-√6
b)
x=3 & x=-3
c)
x=-6 & x=-12
d)
so solution
10.
a)
A
b)
B
c)
C
d)
D
11.

Determine the values of a, b, and c for the quadratic equation:

4x2 – 8x = 3

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

12.

Use the quadratic formula to find the solutions for

y = -x2 - 5x + 12

a)

No Real Solution

b)
c)
d)
13.

Use the quadratic formula to find the solutions for

y = -x2 - 5x + 12

a)

-4.9 and -0.1

b)

-8.54 and 8.54

c)

-0.45 and 3.55

d)

-6.77 and 1.77

14.
At what time would you reach 16 ft above the water if you jump of a cliff using the formula:    
h = -16t2 + 8t + 24?
a)
8
b)
1
c)
1/2
d)
1/4
15.
Complete the Square
x2 + 6x + 20
a)
(x + 3x)2 + 11
b)
(x + 3)2 + 11
c)
(x + 6)2 + 11
d)
(x + 3)2 + 29
16.
Fill the blank space to complete the perfect square trinomial
x2-18x+____=(x- ____)2
a)
9 and 3 respectively
b)
81 and 9 respectively
c)
-9 and -3 respectively
d)
-81 and -9 respectively
17.

For what values of k are the roots of the quadratic equation  x2+k(2x)+2=0x^2+k\left(2x\right)+2=0  real and equal ?

a)

0

b)

1

c)

2

d)

3

18.

Find for what value(s) of k, the quadratic equation, (k+1)x22(k1)x+1=0\left(k+1\right)x^2-2\left(k-1\right)x+1=0  has equal roots?

a)

0

b)

3

c)

0 , 3

d)

None of these

19.

 If the discriminant of 3x2+2x+a=03x^2+2x+a=0 is double the discriminant of  x24x+2=0x^2-4x+2=0  , find a

a)

1

b)

1-1  

c)

0

d)

None of these

20.

A polynomial equation in x of degree n always has

a)

n distinct roots

b)

n real roots

c)

exactly n roots

d)

n imaginary roots