Question

(x-1/2y)(x-1/2y)

Answer 1

\(\left(x-\dfrac{1}{2}y\right)\left(x-\dfrac{1}{2}y\right)\)

\(=\left(x-\dfrac{1}{2}y\right)^2\)

\(=x^2-xy+\dfrac{1}{4}y^2\)

Answer 2

\(\dfrac{x-1}{2y}\cdot\dfrac{x-1}{2y}=\dfrac{\left(x-1\right)^2}{4y^2}=\dfrac{x^2-2x+1}{4y^2}\)