K = H(T2−1)T2−T
K = HT(T−1)2
K = H(T2+1)T
K = H(T−1)T
Correct answer is A
T = √TK−HK−H
Taking the square of both sides, give
T2 = TK−HK−H
T2(K - H) = TK - H
T2K - T2H = TK - H
T2K - TK = T2H - H
K(T2 - T) = H(T2 - 1)
K = H(T2−1)T2−T
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