120 = 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 = 1
The number one to the power of any non-negative integer is 1.
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To solve this, consider that there are 20 nickels in 1 dollar. So, if you divide 40,000 by 20, you can solve for the answer.40,000 / 20 = $2,000
m^4 n^5 - m^20 n^21
For anything to the power of a negative, put the number as the denominator in 1/? and then solve (ex: 2 to the power of neg. 2 = 1/2 to the power of 2 = 1/4)
Solve the exponent first and then subtract it! Ex 5 to the 2 power-20 5 to the 2power = 25-20=5!!
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