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.
p
l
o
t
-
.
7
x
4
-
1
.
6
x
3
+
2
x
2
+
1
.
5
x
f
r
o
m
-
3
t
o
1
.
5
Math Input
Natural Language
Math Input
