Question

a square x square+2abxy+b square y square

Answer 1

Using the identity (a+b)^2=a^2+b^2+2ab

Answer 2

Answer:

(a²-b²)²+(a²+b²)²

=>Expanding both of them we get,

(a⁴+b⁴-2a²b²) + (a⁴+b⁴+2a²b²)

Hence, on opening the brackets...

It gives, 2(a⁴+b⁴)

Step-by-step explanation: