Question

Factorise fully 6x + 9x cubed

Answer 1

Answer:

• $3375x^3$

Step-by-step 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 ]

Answer 2

Answer:

3x(3x² + 2x)

Step-by-step explanation:

6x + 9x³

rearrange tribe

9x³ + 6x

factor by grouping

3(3x³ + 2x)

3x(3x² + 2x)