ALGEBRA
posted by Randy on .
Consider the following expression.
3(x  2)  9(x**2 + 7 x + 4)  5(x + 8)
(a) Simplify the expression.

3(x2)9(x^2+7x+4)5(x+8)
3x69x^263x365x40
9x^265x82 
you have to know the distributive property in order to do this one.
x(a+b)= xa+xb
so first, to make it easier, separate it. Like this:
3(x2)
9(x**2+7x+4)
5(x+8)
Lets start with 3(x2) 3*x is 3x and 3*2 is 6... 3x6
9*x**2 is 9x**2 and 9*7x is 63x and 9*4 is 36 so this is 9**263x36
5(x+8) 5*x+ =5x and 5*8+ 40!!!!!
so you add these together to get
3x69x**263x365x40
then you have to add all the like monomials together, which hopefully you can do but i'll explain it nonetheless.
63x+3x5x= 65x
63640= 82
then 9x**2
putting these together, we get...(drum roll please :P)
9x**265x82!!!!!!!!
im tired. hope this helped.