x-4 = 1/x4. That is as much simplification as can be done without knowing what x is.
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x=63xy-2/x39*x2y4/x69x2x6*y4
T to the fourth power is already fully simplified unless you have a value for "t."
3 raised to the third power is 3 x 3 x 3 = 27 The smallest number that cane be written as a power of 2,4, or 8 is 256, since 256 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 2 to power 8 256 = 4 x 4 x 4 x 4 = 4 to power of 4 256 = 16 x 16 = 16 to power 2
4/20 = 1/5 in lowest termTo simplify 4/20 to its lowest term:1. Get the Greatest Common Factor (GCF) of 4 & 20.4 = 2 x 220= 2 x 2 x 5=========GCF=2x2GCF=42. Divide the numerator and denominator by their GCF.4/20 =(4 ÷ 4) / (20 ÷ 4) = 1/54/20 = 1/5 in lowest term
x^8 - y^8 = (x - y)(x + y)(x^2 + y^2)(x^4 + y^4)