Question

Tính :

a) \(x^{10}:\left(-x\right)^8\)

b) \(\left(-x\right)^5:\left(-x\right)^3\)

c) \(\left(-y\right)^5:\left(-y\right)^4\)

Answer 1

a) x¹⁰ : (-x)⁸ = x¹⁰ : x⁸ = x^{10 – 8} = x²

b) (-x)⁵ : (-x)³= (-x)^{5 – 3} = (-x)² = x²

c) (-y)⁵ : (-y)⁴ = (-y)^{5 – 4} = -y