Powers with Negative Exponents

Q.

What is the value of -5 raised to the power of 2?

1. -25

2. 16

3. 5

4. 25

Q.

$(\frac{2}{5}{)}^2=-(\frac{2}{5}{)}^2$

1. False

2. True

Q. Which of the following is the multiplicative inverse of ${(-\frac{5}{2})}^{-3}$?

1. ${\left(\frac{2}{5}\right)}^3$
2. $-{\left(\frac{5}{2}\right)}^{-3}$
3. ${\left(\frac{5}{2}\right)}^3$
4. ${(-\frac{2}{5})}^3$

Q.

Find the value of $7^{-3}$.

1. $\frac{1}{343}$

2. $\frac{1}{49}$

3. $343$

4. $\frac{1}{21}$

Q.

Simplify and write in exponential form:
$4^3\times 4^{-2}\times {16}^2$

1. $4^3$

2. $4^4$

3. $4^5$

4. $4^6$

Q.

Simplify
$\left\{\frac{1}{6^{(-2)}}-\frac{1}{3^{(-3)}}\right\}÷\frac{1}{5^{(-2)}}$

1. $(\frac{3}{5}{)}^2$

2. $(\frac{9}{25}{)}^2$

3. $(\frac{5}{3}{)}^2$

4. $(\frac{25}{9}{)}^2$

Q.

Express "1 divided by (9x9x9)" in exponential form.

1. 729

2. 9^-3

3. 9^3

4. 1/9^-3

Q.

What is the value of ${\left(\right(2{)}^{-1})}^{-2}$?.Give your answer in numerals

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Q.

Find the multiplicative inverse of 10${}^{-5}$.

1. $0.00001$

2. $-50$

3. $-100000$

4. $100000$

Q.

Find the value of $({\left(\frac{3}{2}{)}^{-1}\right)}^{-2}.$

1. $\frac{4}{9}$

2. $\frac{-9}{4}$

3. $\frac{-4}{9}$

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