How do you multiply 3x(x+9)?

1 Answer
Jun 25, 2015

= color(green)(3x^2 + 27x

Explanation:

color(green)( 3x)(x+9)

Here color(green)(3x) needs to be multiplied with each term within brackets:

= color(green)(3x) . (x) + color(green)(3x) . (9)
= color(green)(3x^2 + 27x