Question

Which is the best algebraic identity that can be used to evaluate 395^2 ?
(a + b)^2 = a^2 + 2ab + b^2
(a – b)^2 = a^2 – 2ab + b^2
(a + b) (a – b) = a^2 – b^2
Algebraic Identity isn’t applicable

Answer 1

Step-by-step explanation:

( a + b )^2 = a^2 + 2ab + b^2

This one

Answer 2

$ans. \: \: (a + b)² = a² + b² + 2ab$