One day, Sahil went to playa cricket tournament (organised in a sports complex) along with his two friends Rahul and Sunil. Someone stole Sahil's bicycle but Rahul and Sunil helped him to buy a new one bicycle contributing rs(2x +80) and rs (8x + 20), respectively, If the bicycle costs rs. 2100,
(a) what were the amount given by Rahul and Sunil to Sahil?
(b) what are the values depicted by Rahul and Sunil here?

The alongside figure shows the dimensions of a wall having a window and a door of a room. Write an algebraic expression for the area of the wall to be painted.

What must be added to x²+4x+1to make it a whole square?

Find the value of the following products
(i) (2m - n)(m - 2n) at m = 1and n =-1
(ii) (a+2)(b-2) at a=0 and b=-2

Using the formula for squaring a binomial, evaluate the following.(199)²

Find the product of the following binomials.
\(\left( \frac { x-y }{ 2 } \right) \left( \frac { x+y }{ 2 } \right) \)

Find the product of the following binomials.(7x-6y)(7x-6y)

Which of the following polynomials is/are a monomial?\(\frac { 1 }{ 2 } a{ c }^{ 2 }b+ba{ c }^{ 2 }+\frac { 1 }{ 2 } { c }^{ 2 }ab,a+1,abc\)

Classify the following as monomials, binomials and trinomials \(2{ a }^{ 2 }cb+\frac { 1 }{ 2 } cb{ a }^{ 2 },b+1,{ a }^{ 2 }b+{ b }^{ 2 }c+{ c }^{ 2 }a\)

Write down the like terms in the given polynomial \(2c{ a }^{ 2 }+\frac { 1 }{ 2 } b{ c }^{ 2 }a+\frac { 2 }{ 3 } bc{ a }^{ 2 }+3{ a }^{ 2 }bc\)