Question

(a+b)² (a-b)² a²-b² Please tell me

Answer 1

Answer:

Here's your answer mate

Step-by-step explanation:

[ A^B means “ A ” to the power of “ B ” ]

Given , (a+b)^2+ (a-b)^2 = ?

We know that ,

(a+b)^2 = a^2 + b^2 + 2ab ———equation 1

We also know that ,

(a-b)^2 = a^2 + b^2 - 2ab ———equation 2

So, in order to find sum of (a+b)^2 and (a-b)^2 ,

i.e (a+b)^2 + ( a-b) ^2 ,

we need to add equations 1 and 2 .

So , by adding equations 1 and 2 , we get ,

=> (a+b)^2 + (a-b)^2 = a^2 + b^2 + a^2 + b^2

= 2(a^2 + b^2 )

As, ( +2ab ) and (—2ab ) terms get cancelled.

Therefore ,

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

HOPE IT HELPS. PLS MARK ME BRAINLIEST .

Answer 2

Answer:

Step-by-step explanation:

1)    (a+b)² = a² + 2ab +b²

2)    (a-b)²  =  a² - 2ab + b²

3)     a²-b²  =  (a+b)(a-b)

HOPE IT HELPS YOU!!!!!  pls mark my ans as the brainliest