Question

expand the squares of the following 2x+1x​

Answer 1

Expand the square of (2x + 1x) :-

identity : (a + b)² = a² + 2ab + b²

⟹ (2x + 1x )²

⟹ ( 2x)² + 2 (2x) (1x) + (1x)²

⟹ 4x² + 4x² + x²