Question

(ax^2+by^2) (ax^2 + by^2) select the suitable Identity and find the following products

Answer 1

(ax²+by²)(ax²+by)²

= (ax²)²+(by²)²+2(ax²)(by²)

= a²${x}^{4}$+b²${y}^{4}$+ 2abx²y²

Identity :- ( a + b) ² = a²+b²+2ab.