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.
An expression in term of some variable(s) is called a
f(x) = 2x – 5 is a polynomial in variable x
g(y) = 5y2 – 3y + 4 is a polynomial in variable y
f(x) = 3x – 7 is a binomial as it contains two terms.
g(y) = 8y is a monomial as it contains only one terms.
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.
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