Question

Using identities, evalute (i) 99^2​

Answer 1

Answer:

9801

Step-by-step explanation:

=(100)^²+(1)^²-2(100)(1)

=10000+1-200

=9801....

HOPE IT HELPS YOU...

Answer 2

$\bigstar$ Question:

• Evaluate (99)² using suitable identities.

$\bigstar$To find:

• (99)² using identity.

$\bigstar$ Solution:

(99)²

$\rightarrow$ ( 100 - 1 )²

$\rightarrow$ {(100)² - 2 (100) (1) + (1)²)}

(Using ( a - b )² = a² - 2ab + b²)

$\rightarrow$ 10000 - 200 + 1

= 9801

$\star$ Formula used:

• ( a - b )² = a² - 2ab + b²