81
as 162=2x81=2x34
fourth root of 81 is 3
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2x to the fourth power minus 162 equals -146
162 to the power of four equals 688,747,536
sqrt(162)factor under the radicalsqrt(92 * 2)bring 9 out front9sqrt(2)========simplified
81 is the only such factor.
a fourth root of 0.04