Question 292347: What is the answer to negative 1 plus the square root of 1 minus 4(2)(-e^7) and then divide the root by 4? Answer by jsmallt9(3758) (Show Source):
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:
To simplify this, we can start by multiplying the 4 and the 2 inside the square root:
and the minus in front of the 8 and the minus in front of the "e" cancle each other out:
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.
"e" is a special, named number like . If you calculator does not have a key for "e", then use 2.7182818284590451 (or some rounded of version of this) for "e".