Question Text
Question 5 :
The height of a triangle is $x^4 + y^4$ and its base is 14xy. Find the area of the triangle.
Question 6 :
Add the expression: $l^2 + m^2$ , $m^2 + n^2$ , $n^2 + l^2$ , $2lm + 2mn + 2nl$
Question 8 :
Which of the following examples of expressions contain one variable ?
Question 9 :
Subtract $4a – 7ab + 3b + 12$ from $12a – 9ab + 5b – 3$
Question 10 :
How many terms are there in the expression $\frac{x}{2} +\frac{y}{2} − xy$ ?
Question 11 :
Obtain the volume of rectangular box with the following length, breadth and height respectively : 2p, 4q, 8r
Question 14 :
Is $(4pq + 3q)^2 – (4pq – 3q)^2 = 48pq^2$ ?
Question 15 :
Standard identities allow easy alternative methods to calculate products of numbers and so on.Is it TRUE or FALSE?
Question 16 :
Use a suitable identity to get the following product : $\left(\frac{x}{2}+\frac{3y}{4}\right)\left(\frac{x}{2}+\frac{3y}{4}\right)$
Question 17 :
Subtract $5x^2 – 4y^2 + 6y – 3$ from $7x^2 – 4xy + 8y^2 + 5x – 3y$
Question 18 :
How many binomials are there in the list? $– z + 5$, $x + y + z$, $y + z + 100$, $ab – ac$, 17
Question 19 :
Add the expression: $a – b + ab$, $b – c + bc$, $c – a + ac $