Question

98 square in identity????

Answer 1

(98)²

METHOD 1 :


(98)²

(100 - 2)²

×××××××××××××
By identity, (a - b)² = a² + b² - 2ab
×××××××××××××××

(100)² + (2)² - 2(2 × 100)

10000 + 4 - 400

10004 - 400

9604



=============

Method 2 :

(98)²

(90 + 8)²

(90)² + (8)² + 2(8×90)

8100 + 64 + 1440

9604






I hope this will help you


(-:

Answer 2

Hello friends!!

Here is your answer :

${(98)}^{2}$


$= > {(100 - 2)}^{2}$


Using identity :

( a - b )² = a² + b² - 2ab

$= > {(100)}^{2} + {(2)}^{2} - 2(100)(2)$


$= > 10000 + 4 - 400$


$= > 10004 - 400$


$= > 9604$


Hope it helps you.. ^_^

#Be Brainly