Question

\(\dfrac{2x}{\left(x+2\right)^3}\),\(\dfrac{x-2}{2x\left(x+2\right)^2}\)

Answer 1

`MTC:2x(x+2)^3`

Có:

  `[2x]/[(x+2)^3]=[4x^2]/[(x+2)^3]`

  `[x-2]/[2x(x+2)^2]=[(x-2)(x+2)]/[2x(x+2)^3]=[x^2-4]/[2x(x+2)^3]`

Answer 2

\(\dfrac{2x}{\left(x+2\right)^3}=\dfrac{4x^2}{2x\left(x+2\right)^3}\)

\(\dfrac{x-2}{2x\left(x+2\right)^2}=\dfrac{\left(x-2\right)\left(x+2\right)}{2x\left(x+2\right)^3}\)