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(?)^2 = 9^4

Guest Feb 27, 2017

Best Answer 

 #1
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+10

(?)^2 = 9^4

 

x^2 = 6,561 take the square root of both sides

x = 81

Guest Feb 27, 2017
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2+0 Answers

 #1
avatar
+10
Best Answer

(?)^2 = 9^4

 

x^2 = 6,561 take the square root of both sides

x = 81

Guest Feb 27, 2017
 #2
avatar+89796 
+5

(?)^2 = 9^4

 

\((x)^2 = 9^4\\ (x)^2 = (9^2)^2\\ (x)^2 = (81)^2\\ x=\pm81 \)

Melody  Feb 27, 2017

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