Respuesta :

NgShiYin

Answer:

3x³ + 12x

Step-by-step explanation:

3x(x² + 4) = 3x³ + 12x

When multiplying stuff in a bracket, multiply (3x) by (x²) first then multiply (3x) by (4). (3x × x² = 3x³)( 3x × 4 = 12x)

Tell me if you need it in factorised form.

Answer:

[tex]3x^{3} +12x[/tex]

Step-by-step explanation:

STEP 1: Apply the distributive property.

[tex]3x^{2} * x^{2} +3x*4[/tex]

STEP 2: Multiply [tex]x[/tex] by [tex]x^{2}[/tex] by adding the exponents.

[tex]3x^3+3x*4[/tex]

STEP 3: Multiply [tex]4[/tex] by [tex]3[/tex].

[tex]3x^{3} +12x[/tex]