Any positive number to the power of zero, including 400, is equal to 1.
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0 to any power is 0.
Any negative number to the power of 0 is always -1
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400/x-10x = 0 Multiply all terms by x: 400-10x2 = 0 Subtract 400 from both sides: -10x2 = -400 Divide both sides by -10: x2 = 40 Square root both sides to find the value of x: Therefore: x = the square root of 40
0 to the power 0 is 1 because any number power zero is always equal to 1.Anything to the power of 0 equals 1.