Any number raised to the fourth power means that it is multiplied by itself four times.
Thus 4 to the fourth is
4 X 4 X 4 X 4 = 256
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The fourth root of fifteen raised to the third power is 7.622 (rounded).
± 3 to the fourth power equals 81.
4x4x4x4
It is about 0.0198
In the expression 16x^4, the variable x is being raised to the fourth power. This means that x is being multiplied by itself four times. The value of x in this expression is unknown and could be any real number. The expression represents 16 times x raised to the fourth power.