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in my book algabric identity is given A sqauare – B square=(a+b) (a-b) in first question it is given that (2x+7y) (2x-7y).In this it is cleared that we have to use – a square- b square form. In next question it is given in the form of a square- b sqaure. eg like 81 sqaure – 19 square. In this it is cleared that we have to use (a+b) (a-b) form. But in third question it is in this form 107x93. In this question which form do we use a square – b square or (a+b) (a-b) form please tell this answer

in my book algabric identity is given
A sqauare – B square=(a+b) (a-b)
 
in first question it is given that (2x+7y) (2x-7y).In this it is cleared that we have to use – a square- b square form. In next question it is given in the form of a square- b sqaure. eg like 81 sqaure – 19 square. In this it is cleared that we have to use (a+b)
(a-b) form. But in third question it is in this form 107x93. In this question which form do we use  
a square –  b  square or (a+b) (a-b) form please tell this answer

Grade:8

1 Answers

Kanika
askIITians Faculty 23 Points
8 years ago
In this you have to use (a + b) (a – b).
As, 107 x 93 can be written as (100 + 7) x (100 – 7)

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