Alka Tuli and Rajesh Hassija Solutions for Chapter: Algebraic Expressions, Exercise 6: MENTAL MATHS

Find the general formula for the number of line segments ($\mathrm{y}$) required to make the following pattern.

An _____ combines numbers/constants; literals/variables and arithmetic operations. (algebraic expression / numerical expression)

Constants have a _____ numerical value. (fixed/changing)

Variables are also called _____.

Numbers multiplied to variables in an algebraic expression are called _____.

If an algebraic expression contains three terms, it is called _____.

The algebraic factors of $3x^{2}y$ are _____.

Two or more terms of an algebraic expression that has the same variables with the same powers but may have different numerical coefficients are called _____ terms.