Question

If p=m\2- n2/5m.make n the subject of the relation. First correct to 3 significant figures,the value of n when p=4 and m=-8

Answer 1

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Answer 2

Taking a wild guess at your confusing equation:

p = m/2 - n^2/5
times 10
10p = 5m - 2n^2
2n^2 = 5m - 10p
n^2 = (5m-10p)/2
n = ± √( (5m-10p)/2 )

now plug in the given values of p and m

Answer 3

did you mean:

p = m/2 - n^2/(5m) ?

make the necessary changes in my solution.

Answer 4

maybe p = (n^2-n^2)/5m
Parentheses make a difference when you don't have text formatting here.