Fundamental Concepts Test

Result

Fundamental Concepts Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Find and correct errors of the following mathematical expressions:

7y+5y+y−12y=0

A
5y

B
2y

C
7 y

D
0

Solution

The given statement is incorrect.

As all the terms have same variables, we can perform operations of addition and substraction. Therefore the correct statement is 7y+5y+y-12y=y.
Question 2
1 / -0

Identify the terms, their coefficients for each of the following expressions. 2lmn²-3mn

A
2,3

B
l,m

C
m,n

D
3, Imn

Solution

Coefficient means a numerical or constant quantity placed before and multiplying the variable in an algebraic expression, so here the constant are 2,3.
Question 3
1 / -0

Find and correct errors of the following mathematical expressions:

(5x)²+8(2x)+9=25x²+8x+9

A
9

B
8x

C
25x²

D
(5x)²

Solution

The given statement is incorrect. Only the first term is written incorrect. Correct statement is

(5x)²+8(2x)+9=25x²+16x+9
Question 4
1 / -0

Find and correct errors of the following mathematical expressions:
x+3x+14x=17x

A
X

B
14x

C
3x

D
17x

Solution

The given statement is incorrect.

As all the terms have same variable x, we can add them,

Therefore, correct statement is x+3x+14x=18x
Question 5
1 / -0

Find and correct errors of the following mathematical expressions: 3/4z+3 = 1/4z

A
1/4z

B
3

C
1

D
4z+3

Solution

As we cannot separate the denominators the statement will remain as it is 3/4z+3 = 3/4z+3
Question 6
1 / -0

Find and correct errors of the following mathematical expressions:

(2z)²+ 5z = 4z + 5z = 9z

A
4z and 9z

B
5z and 2z²

C
(2z)² and 4z²

D
4z² and 5z

Solution

The given statement is incorrect. The correct statement is

(2z)²+ 5z = 4z² + 5z
Question 7
1 / -0

Find and correct errors of the following mathematical expressions:

3x²/3x² = 0

A
0

B
3x²

C
3x²/3x²

D
None of the above

Solution

3x²/3x² = 1 The statement is incorrect. Like terms after cancellations leave remainder as 1.
Question 8
1 / -0

Find and correct errors of the following mathematical expressions:

(4z+5)/4z = 5

A
4z

B
5

C
4z+5

D
(4z+5)/4z

Solution

After separating the denominators, we get (4z+5)/4z = 1 + 5/4z the correct answer.
Question 9
1 / -0

Find and correct errors of the following mathematical expressions: 2m+3n=5mn

A
2m

B
3n

C
5mn

D
2m+3n

Solution

As we cannot apply one rule over here, the correct statement is

2m + 3n = 2m + 3n
Question 10
1 / -0

Find and correct errors of the following mathematical expressions:

(m+4) (m+2) = m²+8

A
(m+4)

B
(m+2)

C
m²+8

D
8

Solution

(m+4) (m+2) = m²+ 6m + 8

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Re-Attempt Weekly Quiz Competition

Fundamental Concepts Test - 2

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Fundamental Concepts Test - 2

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Question 1

5y

2y

7 y

0

Solution

Question 2

2,3

l,m

m,n

3, Imn

Solution

Question 3

9

8x

25x2

(5x)2

Solution

Question 4

X

14x

3x

17x

Solution

Question 5

1/4z

3

1

4z+3

Solution

Question 6

4z and 9z

5z and 2z2

(2z)2 and 4z2

4z2 and 5z

Solution

Question 7

0

3x2

3x2/3x2

None of the above

Solution

Question 8

4z

5

4z+5

(4z+5)/4z

Solution

Question 9

2m

3n

5mn

2m+3n

Solution

Question 10

(m+4)

(m+2)

m2+8

8

Solution

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25x²

(5x)²

5z and 2z²

(2z)² and 4z²

4z² and 5z

3x²

3x²/3x²

m²+8