Question

Factories x^4 + 4
( it is x raised to power 4)​

Answer 1

x⁴ + 4

= (x²)² + (2)²

= (x²)² + (2)² + 2(x²)(2) - 2(x²)(2)

= (x² + 2)² - 4x²

= (x² + 2)² - (2x)²

= (x² + 2 - 2x)(x² + 2 + 2x).