Làm tính chia :
a) \(x^{10} : (-x)^8\)
b) \((-x)^5:(-x)^3\)
c) \((-y)^5:(-y)^4\)
a) \(x^{10} : (-x)^8\) = \(x^{10} : x^8 = x^2\)
b) \((-x)^5:(-x)^3\) \(= (-x)^2 = x^2\)
c) \((-y)^5:(-y)^4\) = -y
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