Expected Value + Variance

#1
Hi guys just a quick question

I am told i have two values which are 100 with probability of 0.8 and 1000 with probability of 0.2. Now, I know the E(X) is just 100(.8) + 1000 (.2).

I know my var(x) = e(x^2) - e(x)^2

so is my var(x) just 100^2(.8) and 1000^(.2) ?