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F to the second power plus 4 equals 5 to the second power What is F?
Wiki User
∙ 14y ago
^ means "to the power of"
F ^ 2 + 4 = 5 ^ 2
F ^2 +4 = 25
F ^2+4 -4 = 25 -4
F^2 = 21
F = (square root of 21)
Wiki User
∙ 14y ago
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