Question

Answer 1

b: \(=\left(\dfrac{1}{9}:\dfrac{-8}{27}\right)\cdot\left(x^4:x^3\right)\cdot\left(y^6:y^6\right)\cdot\left(\dfrac{z^8}{z^6}\right)\)

\(=\dfrac{-3}{8}xz^2\)

d: \(=2\left(x-y+z\right)^2\)