(5x)^-4 = 1/(5x)^4 = 1/625x^4 or this can be stated as x^-4/625
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Oh, what a happy little question! When we have a number raised to a negative power, we can simply move it to the denominator to make it positive. So, 6 to the negative 4th power is the same as 1 over 6 to the 4th power, which simplifies to 1 over 1296. Just a little math magic to brighten your day!
If it's inside the brackets it means that it belongs to that specific term, but if it was outside the brackets, it means that every term inside the brackets goes out with opossite sign. For example: [ -5x + 6y ] = -5x + 6y , the negative is only for 5x, but if you had - [ -5x + 6y] = 5x - 6y , every term inside the bracket goes out with opossite sign.
which of the following is a factor of x2 - 5x - 6
3^(-4) = (1/3)^4 = 1/81
The GCF is x2