UNEXPECTED MATLAB EXPRESSION displayed whenI try to assign a function to a variable

Hello.

In the command window, I created variables a, and x by commands:

syms a syms x

Now, when I try to assign a value to a by writing:

a=(x^2-19x+90)

to generate a equals to [x squared] minus [19 times x] plus [90]

it gives me unexpected matlab expression error.

What am I doing wrong? Please help.

Answer 1

[Walter Roberson]

a=(x^2-19*x+90)

multiplication must be done explicitly.