# Free Study Material For RRB Examination: Mathematics (Basic Algebra)

## Free Study Material For RRB Examination

## Subject : Mathematics (Basic Algebra)

A Civil Servant should be well-versed in basics of Algebra. In the Civil Services Aptitude Test Paper 2, in Basic Numeracy, certainly there will be asked some questions based on equations and their roots.

## Polynomials

## Polynomial

An expression in term of some variable(s) is called a polynomial.

## For example

f(x) = 2x – 5 is a polynomial in variable x

g(y) = 5y2 – 3y + 4 is a polynomial in variable y

## For example

f(x) = 3x – 7 is a binomial as it contains two terms.

g(y) = 8y is a monomial as it contains only one terms.

## Quadratic Polynomials

A polynomial of degree two is called a quadratic polynomials. In
general f(x) = ax2 + bx + c, where

a ¹ 0 is a quadratic polynomial.

## For example

f(x) = x2 – 7x + 8 is a trinomial as it contains 3 terms

g(y) = 5x2 – 2x is a binomial as it contains 2 terms

p(u) = 9x2 is a monomial as it contains only 1 term