Test Details

Algebraic Expressions And Identities

Feb 06, 10:30 AM

60 minutes

Feb 06, 11:30 AM

80.0 marks

MCQ

40 questions

PRASHANT N PUROHIT

Achievers'Academy

Class Details

Maths

Science

Class 8th

Maths

Science

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Question Text

Question 2 :
What will be the product of first monomial $2x$ and second monomial $-5y$ ?

Question 4 :
The area of a circle is given by the expression $\pi x^2+6\pi x+9\pi$. Find the radius of the circle.

Question 8 :
How many terms are there in the expression $5xyz^2 – 3zy$ ?

Question 9 :
State true or false: $8mn^2$ and $5n^2m$ are like terms, which are like $4mn^2$

Question 14 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cc1cf59b460d7261ed0c.png' /> From the above image, find the value of x from the given square if area of the square is 625 square units.

Question 18 :
What is the result of the following divisions? $(2x^3 – 12x^2 + 16x) ÷ (x – 2) (x – 4)$

Question 19 :
Use the identities to find the product of $(4x – 5) (4x – 1)$

Question 22 :
Like terms are formed from the same variables and the powers of these variables are the same,too.Is it TRUE or FALSE?

Question 23 :
Find the area of a rectangle whose length and breadth are $2l^{2}m$ and $3lm^{2}$ respectively.

Question 24 :
State true or false. A factor which occurs in each term is called the common factor.

Question 25 :
Find the area of rectangle with the following pair of monomials as their length and breadth respectively : $\left(20x^2,\ 5y^2\right)$

Question 26 :
Is $(9p – 5q)^2 + 180pq = (9p + 5q)^2$ ?

Question 27 :
Using $a^2 - b^2 = (a + b)(a - b)$, find: $51^2 – 49^2$

Question 28 :
What will be the product of first monomial $-4xy$ and second monomial $-9x^2y^2$ ?

Question 29 :
Find the area of rectangle with the following pair of monomials as their length and breadth respectively : (10m, 5n)

Question 30 :
In carrying out the multiplication of a polynomial by a binomial (or trinomial), we multiply term by term.Is it TRUE or FALSE?

Question 34 :
What is the cofficient of the term $5xy^2$ in the expression $x^2y^2 -10x^2y +5xy^2-20$?

Question 35 :
Obtain the volume of rectangular box with the following length, breadth and height respectively: $a, 2b, 3c$

Question 36 :
State true or false: $(5x + 8)^2 – 160x = (x – 8)^2$

Question 40 :
Simplify: $(a + b) (2a – 3b + c) – (2a – 3b) c$.

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