Class 7 Arjun

• introduction

Ex 6.1

• algebraic expressions - formation
• terms of an expression
• types based on number of terms
• factors and coefficients
  • numerical factors
  • literal or variabe factors
  • numerical coefficient
  • constant terms
• like and unlike terms - same literal factors
• degree of terms - power of the variable
  • degree of constant - zero
• types based on number of variable
• degree of expressions

Ex 6.2

• add and subtraction of algebraic expressions
  • only of like terms
  • horizontal method
  • column method

Ex 6.3

• finding the value of an algebraic expressions
  • substitute the given value