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What is the value of x when x to the exponent of 2 plus 5 equals 21?
Updated: 11/4/2022
Wiki User
∙ 13y agoBest Answer
X^2 + 5 = 21
subtract 5 from each side
X^2 = 16
take square root each side
X = (+/-) 4
-------------------------easy to check
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∙ 13y agoThis answer is:
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