Question

What is `(-4.00xx10^11)^4`?

Answer 1

Surely the answer MUST be positive.......?

Explanation:

And so `(-4.00xx10^11)^4=(-4xx10^11)^2xx(-4xx10^11)^2`

`=16xx10^22xx16xx10^22`

`=16^2xx10^22xx10^22`

`=256xx10^44`....an unfeasibly large noomber..........

Remember that `(-x)^2=(-x)xx(-x)=-1xx-1xxx^2=(-1)^2x^2=1xxx^2=x^2`