Find the product. 3(x + 4) (x - 5) a. 3x2 ? 20x b. 3x2 ? 11x ? 20 c. 3x2 ? 3x ? 60 d. 3x2 ? x ? 20

For this case we must find the product of the following expression:

We must apply distributive property to the terms of the first parenthesis:

Again we apply the distributive property:

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

c

step-by-step explanation: