Question

Find the sq. numbers 71

Answer 1

Answer:

the square of 71 is 5041

Answer 2

Solution :

71

71² = ( 70 + 1 )²

Formula used :

• (a + b)² = a² + 2ab + b²

Now :

= ( 70 )² + 2 × ( 70 ) × ( 1 ) + ( 1² )

= 4900 + 140 + 1

= 5041