If m+1/m=-5 , then m²+1/m²=23 proof that
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m + 1/m = -5
squaring on both the sides
(m + 1/m)^2 = (-5)^2
m^2 + 2(m)(1/m) + (1/m)^2 = 25
m^2 + 2 + 1/m^2 = 25
m^2 + 1/m^2 = 25 - 2
m^2 + 1/m^2 = 23
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on squring both sides
by using identity of (a+b)²= a²+b²+2ab
hence proved
hope it helps
be brainly
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