evaluate;1 x 10 negative 5-(2x10 negative -6)

Get both numbers to the same power, and then subtract.

To evaluate the expression: 1 x 10^(-5) - (2 x 10^(-6)), we need to simplify it step by step.

First, let's distribute the negative sign to both terms inside the parentheses:
1 x 10^(-5) - 2 x (10^(-6))

Next, we can simplify both terms individually:
1 x 10^(-5) = 0.00001
2 x 10^(-6) = 0.000002

Now, substituting these values back into the expression:
0.00001 - 0.000002

Finally, subtracting the two numbers:
0.00001 - 0.000002 = 0.000008

So, the value of the expression 1 x 10^(-5) - (2 x 10^(-6)) is 0.000008.