2x to the fourth power minus 162 equals -146
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162 to the power of four equals 688,747,536
81 as 162=2x81=2x34 fourth root of 81 is 3
162 - 135 = 27
To subtract 15 percent from a number, multiply it by (1 - 15/100) = 0.85. Therefore, 162 - 15% = 162 x 0.85 = 137.7.
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