if m- 1/m = 5 find m^2- 1/ m^2
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M-1/m=5
M-1=5m
4m=-1
M=-1/4
M^2-1/m^2=[(-1/4)^2 -1]÷[(-1/4)^2]
=(1/16)-1 ÷ 1/6
=-15/1
=-15
M-1=5m
4m=-1
M=-1/4
M^2-1/m^2=[(-1/4)^2 -1]÷[(-1/4)^2]
=(1/16)-1 ÷ 1/6
=-15/1
=-15
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