Verified Answer :

jhonyy9

hope you think it in this way wrote 

S+NQ^2 T = -4Q solve it for N    so subtract from both sides an S and will get 

S-S +NQ^2 T = -4Q -S

NQ^2 T = -4Q -S   divide both sides by T and will get 

NQ^2 = (-4Q -S)/T    divide both sides by Q^2

N = (-4Q -S)/(Q^2 T)

hope helped

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