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

1 Answer
anor277
Sep 2, 2017

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

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