Find the product 3 (x+4) (x-5)

3x^2-20x

3x^2-x-20

3x^2-11x-20

3x^2-3x-60

My answer is like this

Step-by-step explanation

ok so what you are going to do with 3 (x+4) (x-5) is multiply the 3*x, 3*4

which makes (3x+12) (3x-15)

combine like terms which gives you 6x = - 15+12=-3

6x=-3 then - 3/6 reduce it makes - 1/2