Question

X square + 2 a square + b square x + a square minus b square whole square​

Answer 1

Answer:

You are probably asking the formula for:

(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)