LUỸ THỪA CỦA MỘT SỐ HỮU TỈ

Multiple Choice

7.7.7.7.7=......

• $$7^5$$  

• $$5^7$$  

• $$7^4$$  

• $$4^7$$  

Multiple Choice

12.12.12.12.12......12= ........... (n số 12 nhân với nhau)

• $$12^n$$  

• $$12$$  

• $$n^{12}$$  

• n

Multiple Choice

$$\frac{-5}{6}.\ \frac{-5}{6}.\ \frac{-5}{6}.\ \frac{-5}{6}.\ \frac{-5}{6}=.....$$  

• $$\left(\frac{-5}{6}\right)^6$$  

• $$\frac{-5^5}{6}^{ }$$  

• $$\left(\frac{-5}{6}\right)^5$$  

• $$\frac{-5^6}{6}$$  

Multiple Choice

$$\left(-0,4\right).\left(-0,4\right)\left(-0,4\right).\left(-0,4\right)\left(-0,4\right).\left(-0,4\right)=.....$$  

• $$\left(-0,4\right)^4$$  

• $$-0,4^5$$  

• $$\left(-0,4\right)^6$$  

• 0,4 $$-0,4^6$$  

Multiple Choice

$$\left(\frac{1}{3}\right)^2$$  =.......

• $$\frac{2}{9}$$  

• $$\frac{1^2}{3^2}$$  

• $$\frac{1^3}{3^2}$$  

• $$\frac{1}{27}$$  

Multiple Choice

$$\left(\frac{1}{45}\right)^n=......$$  

• $$\frac{1}{45^n}$$  

• $$\frac{n}{45^n}$$  

Multiple Choice

So sánh $$\left(\frac{-3}{5}\right)^2\ và\ \ \ \ \ \frac{\left(-3\right)^2}{5^2}$$  

• $$\left(\frac{-3}{5}\right)^2=\frac{\left(-3\right)^2}{5^2}$$  

• $$\left(\frac{-3}{5}\right)^2>\frac{\left(-3\right)}{5^2}$$  

• $$\left(\frac{-3}{5}\right)^2<\frac{\left(-3\right)^2}{5^2}$$  

Multiple Choice

$$\left(-\frac{5}{9}\right)^6.\left(-\frac{5}{6}\right)^7=....$$  

• $$\left(-\frac{5}{6}\right)^{13}$$  

• $$\left(-\frac{5}{6}\right)^{42}$$  

• $$\left(-\frac{5}{6}\right)^1$$  

Multiple Choice

(-0,8)⁵ : (-0,8)² =....

• $$-0,8^3$$  

• $$\left(-0,8\right)^3$$  

• $$-0,8^2$$  

• $$\left(-0,8\right)^2$$  

Multiple Choice

Kết quả của (2³)¹⁰⁰ =......

• 2³⁰⁰

• 2¹⁰³

• 2⁹⁷

• 2^100/3

Multiple Choice

Kết quả của luỹ thừa $$\left(\left(\frac{1}{5}\right)^3\right)^7$$  =....

• $$\left(\frac{1}{5}\right)^{20}$$  

• $$\left(\frac{1}{5}\right)^4$$  

• $$\left(\frac{1}{5}\right)^{10}$$  

• $$\frac{1^{21}}{5^{21}}$$  

Multiple Choice

Tìm x biết $$1,2^3.x=1,2^5$$  

• x= $$\left(1,2\right)^2$$  

• $$x=1,2^4$$  

• $$x=1,2^7$$  

• x= $$1,2^8$$