# Simplify Expression for Hydraulics

• Dec 14th 2011, 11:38 AM
Riazy
Simplify Expression for Hydraulics
Hi guys, i am currently preparing for one of my exams in hydraulics
.and here is the expression that I am failing to solve.

h/2 + L*h^3 / 12 * h * L * h/2

So my goal is to try to find a shorter expression for this.
and I get 2h/3

But our teachers solution is insisting on that it should be
h * 3/2

how did he get to that?
• Dec 14th 2011, 11:41 AM
Siron
re: Simplify Expression for Hydraulics
It would be useful if you would use brackets, because the expression is not clear to me.
$\frac{h}{2}+\frac{l\cdot h^3}{h\cdot l\cdot \frac{h}{2}}$?
$\frac{h}{2}+\frac{l\cdot h^3}{12\cdot h} \cdot h \cdot l \cdot \frac{h}{2}$
...
?