Câu hỏi của Tran Lam Phong

Question

tính

a, 8¹²: 4⁶

b, 27⁶: (9/5)²

c, (a-b)⁵: (b- a)³

d, (a-b)⁷: (b- a)

Nguyễn Lê Phước Thịnh · Accepted Answer

a: $=\dfrac{2^{36}}{2^{12}}=2^{24}$

b: $=3^{18}:\dfrac{3^2}{5^2}=3^{16}\cdot5^2$

c: $=-\dfrac{\left(a-b\right)^5}{\left(a-b\right)^3}=-\left(a-b\right)^2$

d: $\dfrac{\left(a-b\right)^7}{\left(b-a\right)^4}=\dfrac{\left(a-b\right)^7}{\left(a-b\right)^4}=\left(a-b\right)^3$

Câu trả lời:

a: $=\dfrac{2^{36}}{2^{12}}=2^{24}$

b: $=3^{18}:\dfrac{3^2}{5^2}=3^{16}\cdot5^2$

c: $=-\dfrac{\left(a-b\right)^5}{\left(a-b\right)^3}=-\left(a-b\right)^2$

d: $\dfrac{\left(a-b\right)^7}{\left(b-a\right)^4}=\dfrac{\left(a-b\right)^7}{\left(a-b\right)^4}=\left(a-b\right)^3$