Question

Factorise fully 6x + 9x cubed

Answer 1

3x(3x² + 2x)

Explanation:

6x + 9x³

rearrange tribe

9x³ + 6x

factor by grouping

3(3x³ + 2x)

3x(3x² + 2x)

Answer 2

• 
  `3375x^3`

Explanation:

→
`\left(6x\:+\:9x\right)^3`

→
`\left(15x\right)^3` [ add the x inside the bracket ]

→
`15^3x^3` [ remove the bracket ]

→
`3375x^3` [ final answer ]