Question 292347
This is just an expression. All you can do with an expression is simplify it.<br>
The best I can tell is that this expression is from the Quadratic Formula. If so, then the entire first part of the expression is divided by 4:
{{{(1 + sqrt(1 - 4(2)(-e^7)))/4}}}<br>
To simplify this, we can start by multiplying the  4 and the 2 inside the square root:
{{{(1 + sqrt(1 - 8(-e^7)))/4}}}
and the minus in front of the 8 and the minus in front of the "e" cancle each other out:
{{{(1 + sqrt(1 + 8e^7))/4}}}
This is as far as you can go without a calculator. And once you start using a calculator you are then dealing with a decimal approximation for the value of the expression.<br>
"e" is a special, named number like {{{pi}}}. If you calculator does not have a key for "e", then use 2.7182818284590451 (or some rounded of version of this) for "e".