+0

# (?)^2 = 9^4

+5
55
2

(?)^2 = 9^4

Guest Feb 27, 2017

#1
+10

(?)^2 = 9^4

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

x = 81

Guest Feb 27, 2017
Sort:

#1
+10

(?)^2 = 9^4

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

x = 81

Guest Feb 27, 2017
#2
+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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