Math Help - Multiply

1. Multiply

Multiply
(-4x-3y) (5y-12z) =

(x2 + 8x + 7) ÷ (x + 6)=

2. Originally Posted by westdivo
Multiply
(-4x-3y) (5y-12z) =
Use the "distributive law", twice;
-4x(5y- 12z)- 3y(5y- 12z) is one use of it

-4x(5y)- 4x(12z)- 3y(5y)- 3y(-12z) is the second. Multiply those.

(x2 + 8x + 7) ÷ (x + 6)=[/QUOTE]
So this is $\frac{x^2+ 8x+ 7}{x+ 6}$. It should be obvious that x+ 6 is NOT a factor of the numerator (6 is not a factor of 7) so you cannot reduce it any more.

3. If you're having trouble with the distribution for the multiplication, try another method here.

To learn how to do polynomial division, try here.