## Short trick to Get √17 in just 3 second

__ Follow these Steps :-__

#### We know the Non Perfect Square root number like √16 , √25, √100, √144 etc.

#### Now, we have to Find the square root √7

#### So, we have follow this method:-

### Step 1:

#### To Find the square root we divied. the number into nearby perfect square number and non -perfect square number like √9-2

### Step 2 :

#### Now put the value in this formula

#### √x+y = √x + y/2√x

#### √9-2 = 3 + 1/2 x 3

## = 3.16

#### So solve this and get the answer of under root 17 .

#### Therefore , √7 = 2.67

#### so Final answer is 2.67

#### This method is very easy to find non perfect square root

### More example –

#### √10 = √9+1

#### √9+1 = 3 + /2×3

#### = 3.16

#### This trick is basically from chapter application of derivative of class 12thmathematics. it is a small part of the topic approximation. That formula come after we differentiate the root x by basic differentiation. by this method we can find approximate many other functions like cube root , x raise to the power 1/4 and so on.. for more about this method you can read in class 12th book chapter AOD.

#### In Noteboook

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