Question

Evalute (29)^2-(28)^2

Answer 1

Hey there !

Answer:

This sum is of the form of a² - b²

We know the identity that,

=> a² - b² = ( a + b ) ( a - b )

Here, a = 29 and b = 28

=> 29² - 28² = ( 29 + 28 ) ( 29 - 28 )

=> 29² - 28² = ( 57 ) ( 1 )

=> 29² - 28² = 57

This is the required answer !

Answer 2

This is an identity.