Question

Factorise the expression : x^4 + x^2y^2 + y^4​

Answer 1

Answer:

= (x² + y²)²

Step-by-step explanation:

x⁴ + 2x²y² + y⁴

we know that, (a + b)² = a² + 2ab + b²

so according to the question,

a² = x⁴

a = x²

b² = y⁴

b = y²

so,

= (x² + y²)²