The problem
I need help understanding this solution. What is the final answer:?
Answer provided by our tutors
Your equation is expressed in functional notation. It should be noted that the only place in the software where functional notation is accepted, and is in fact required, is one of desktop Algebrator's Function wizards. In all other instances, equations provided using functional notation should be entered without the functional notation because syntactically "f(x)" is equivalent to "the variable f multiplied by the variable x, in parentheses". So to simply graph a function within a new worksheet or to use the function in a non-Function wizard, replace "f(x)" with a single variable, such as "y".
The other issue is solving for a specific 'x'. There are "wizards" made available through desktop Algebrator which simplify a variety of functions, one of which is solving "f(x)" for a specific value. In contrast, through doyourmath.com simply replace every instance of 'x' with '(-3)' and the expression will be simplified.
Finally, I suspect there is a typo in the entry because a standard quadratic equation would be "ax^2 + bx + c" but that expression follows the form "ax^2(bx)+c":
(-3)^2(5(-3))+4
...notice the other possibilities as shown below:
