multiply binomial by binomial in 5 secs

[ssparikshya]

friends, today i gonna show you how to multiply binomial by binomial in 5 secs

Example: (X+6) (X+7) = ??

Step 1 : multiply the 1st term with the 1st term and get the 1st term of the answer ; here X with X = (X)2

our answer Till Now : (X)2 + ------ + -------

Step 2 : multiply the last term with last term to get the last term of your answer. ; here 6x7 = 42

our answer Till Now : (X)2 + ------ + 42


Step 3 : multiply the 1st term of the 1st binomial with the 2nd term of the 2nd binomial and vise-versa ; Here X with 7 = 7X
and X with 6 = 6X

and add the products ( if with Same Coefficient) ; here 7X + 6X = 13x

Our Final Answer - (X)2 +13X +42

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Normal Way


(X + 6) (X + 7)

= X(X+7) +6(X+7)
= (X)2 +7X + 6X + 42
= (X)2 + (7+6)X + 42
= (X)2 +13X +42 - Answer


Source: My Experiment


Note: (X)2 Means (X multiplied with X) OR X squared

[Srini]

,.. +1 repute to u bro... And in our School we followed this method oly, and never followed the normal way..

[ssparikshya]

do you know trinomial trick