-2x-2x-2x-2= 16 (positive)
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"2 to the power of 4" is written "two to the fourth power", and "8 to the power of 2" is known as "eight squared". And, eight squared is greater than two to the fourth power. Eight squared is 64, and two to the fourth power is 16.
5 to the fourth power times 2 to the second power
2x2x3x3x3x3 or 2 to the second power times 3 to the fourth power.
There are an infinite number of fractions that equal one-fourth.
20000