Question

Using suitable algebraic identity, solve 109sq​

Answer 1

$\huge\tt{ᴀɴsᴡᴇʀ :-}$

(109) 2

=(100+9)2

Using,(a+b)

2=a2 +b2+2ab

we get,

=(100)

2+92+2(100)(9)

=10000+81+1800

=11881

Answer 2

Step-by-step explanation:

(109)²

(100 + 9)²

(100)²+ 2*100*9+ (9)² [ (a+b)² = a²+2ab+b²]

10000+1800+81

11881