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Time | Transcript |
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00:00 - 00:59 | so here are the question is says use the formula a + b into a minus b is equal to a square minus b square to evaluate 33 in 227 so we need to evaluate 3327 by using this formula ok so what we are given we are given the Teesri in 227 ok now to solve this we can write this 33 has 30 plus 3 ok and this 27 as 30 - 3 so what we got 30 + 3 x 30 - 3 ok sunao if you see these two terms now these two terms are in the form of an identity which is the above identity ok that is I am writing it down there again a + b |

01:00 - 01:59 | into a minus b that is a square minus b square sunao heavy can see that 30 is acting as a and 3 is acting as sunao putting this into the formula we get a square minus b square so here is 30 square minus b square B is 3 square 30 square is 903 square is 9 if we subtract 9 from 950 get 891 this is our final answer thank you |

**Introduction**

**Constant A symbol having a fixed numerical value is called a constant.**

**variable A symbol which takes various numerical values is called a variable.**

**Algebraic expressions A combination of constants and variables connected by the signs of fundamental operations of addition subtraction multiplication and division is called an algebraic expression.**

**Terms Various parts of an algebraic expression which are separated by the signs of + or - are called the terms of the expression.**

**Monomial An algebraic expression containing only one term is called a monomial.**

**Binomial An algebraic expression containing two terms is called a binomial.**

**Trinomial An algebraic expression containing three terms is called a trinomial.**

**Factors**

**Coefficient In a term of an algebraic expression any of the factors with the sign of the term is called the coefficient of the product of the other factors.**