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.
n
o
r
m
a
l
t
o
x
1
+
x
2
a
t
x
=
1
Math Input
Natural Language
Math Input
