Question

How do you multiply `4x(3x^2+2x+1)`?

Answer 1

`= color(blue)( 12x^3 + 8x^2 +4x`

Explanation:

`color(blue)(4x)(3x^2 + 2x +1)`
Here `color(blue)(4x)` needs to be multiplied with each term within bracket:

`=color(blue)(4x) . (3x^2 ) + color(blue)(4x).(2x) +color(blue)(4x).(1)`
`= color(blue)( 12x^3 + 8x^2 +4x`