Question

evaluate using identities : (71)square​

Answer 1

Answer:

evalute using identities : 71 square is 5041

Answer 2

$\huge\red{Answer \: }$ = $\huge\blue{5041 \: }$

$\huge\red{Explanation \: }$

$\huge{\orange{\boxed\boxed{\pink{\under{\green{\mathscr{Given.}}}}}}}}}}$ 71²

=(70+1)²

(a+b)² = a² + b² + 2ab

putting → a = 70 & b = 1

= (70)² + (1)² + 2(70)(1)

= 4900 + 1 + 140

= 5041 ans.