Bài 2_Số_HKI

$$a^m.a^n=a^{m+n}$$

$$\left(a.b\right)^m=a^m.b^m$$

$$\left(a^m\right)^n=a^{m+n}$$

$$\left(a^m\right)^n=a^{m.n}$$

$$\frac{8}{9}$$

$$\frac{8}{27}$$

$$\frac{4}{9}$$

$$\frac{4}{27}$$

$$x^0=x$$

$$x^1=1$$

$$x^0=x$$

$$\left(\frac{x}{y}\right)^n=\frac{x^n}{y^n}\ \left(y\ne0;\ n\in N\right)$$

$$7$$

$$\frac{1}{49}$$

$$\frac{1}{7}$$

$$1$$

$$\left(-2019\right)^0=1$$

$$\left(0,5\right).\left(0,5\right)^2=\frac{1}{4}$$

$$4^6:4^4=16$$

$$\left(-3\right)^3.\left(-3\right)^2=\left(-3\right)^5$$

$$x^{18}:x^6\left(x\ne0\right)$$

$$x^4.x^8$$

$$x^2.x^6$$

$$\left(x^3\right)^4$$

$$8^8$$

$$9^8$$

$$6^8$$

Một đáp án khác

$$\frac{1}{3}$$

$$\left(\frac{1}{3}\right)^7$$

$$\left(\frac{1}{3}\right)^6$$

$$\frac{1}{18}$$