Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
h
e
s
s
i
a
n
o
f
1
2
x
1
2
y
1
4
-
3
x
-
y
Math Input
Natural Language
Math Input