X^8 = ()^2
x^8 = (x^4)^2
x^8 = x^8
inside the parethesis is x^4
hope this helps
Hi!
You can think of this question like the photos attached above.
Hope this helps! Best of luck!
You first work out the mean then for each number subtract the mean and square the result then work out the mean of those squared differences and take the square rot of that and you're done :)
3 because when you add 3 and 4 together it would equal 180 degrees which is supplementary