math10th
posted by
yengiang on
.
Simplify
7x^2+45x+18/(x^3+12x^2+36x)
Please help.
Thank you.

math10th 
Steve,
7x^2+45x+18 = (7x+3)(x+6)
x^3+12x^2+36x = x(x+6)^2
so, dividing, you are left with
(7x+3)/(x(x+6))

math10th 
Eric,
(7x+3)/x(x+6)^2 can be simplified to
(7x+3)/(x^2+6x)^2 which can be simplified to...
(7x+3)/(x^4)+(6x^2)

Cass 10th Geometry 
Audree,
what is the area of 32cm