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Algebra II : Exponents

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Example Questions

Example Question #411 : Exponents

Simplify:

$\frac{16^{20}}{16^5}$

Possible Answers:

$16^{21}$

16^4

$16^{25}$

$16^{15}$

$16^{100}$

Correct answer:

$16^{15}$

Explanation:

When we divide exponents with the same base, we simply subtract the exponents while keeping the base the same.

Therefore:

$\frac{16^{20}}{16^5}=16^{20-5}=16^{15}$

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Example Question #412 : Exponents

Simplify: $4^7*4^{12}$

Possible Answers:

$4^{19}$

$4^{36}$

$4^{24}$

$4^{84}$

$4^{28}$

Correct answer:

$4^{19}$

Explanation:

When multiplying exponents with the same base, we just add the exponents and keep the base the same.

$4^{7}*4^{12}=4^{7+12}=4^{19}$

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Example Question #413 : Exponents

Simplify: $5^{17}*5^{23}$

Possible Answers:

$5^{391}$

$5^{40}$

$5^{50}$

$5^{235}$

$5^{42}$

Correct answer:

$5^{40}$

Explanation:

When multiplying exponents with the same base, we just add the exponents and keep the base the same.

$5^{17}*5^{23}=5^{17+23}=5^{40}$

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Example Question #414 : Exponents

Simplify: $\frac{6^{48}}{6^{12}}$

Possible Answers:

$6^{22}$

$6^{30}$

$6{^{36}}$

$6^{4}$

$6^{24}$

Correct answer:

$6{^{36}}$

Explanation:

When dividing exponents with the same base, we just subtract the exponents and keep the base the same.

$\frac{6^{48}}{6^{12}}=6^{48-12}=6^{36}$

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Example Question #415 : Exponents

Simplify: $\frac{8^{60}}{8^{-12}}$

Possible Answers:

$8^{80}$

$8^{-720}$

$8^{72}$

$8^{64}$

$8^{48}$

Correct answer:

$8^{72}$

Explanation:

When dividing exponents with the same base, we just subtract the exponents and keep the base the same.

$\frac{8^{60}}{8^{-12}}=8^{60-(-12)}=8^{72}$

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Example Question #85 : Simplifying Exponents

Simplify the following:

(2a^2b^8c)(8bc^7)

Possible Answers:

16a^2b^9c^8

16b^8c^7

16b^9c^8

16a^2b^9c^7

16a^2b^8c^7

Correct answer:

16a^2b^9c^8

Explanation:

Remembering the exponent rule of multiplication:

$x^m*x^n=x^{m+n}$

Therefore:

(2a^2b^8c)(8bc^7)

Becomes:

$2*8a^2b^{8+1}c^{1+7}$

Which gives the final answer:

16a^2b^9c^8

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Example Question #86 : Simplifying Exponents

Simplify:

$\frac{12a^6b^2c^3}{4ab^7c^6}$

Possible Answers:

$\frac{3a^6b}{c^3}$

3a^5b^5c^3

$\frac{a^5}{3b^5c^3}$

$\frac{4a^5}{b^5c^3}$

$\frac{3a^5}{b^5c^3}$

Correct answer:

$\frac{3a^5}{b^5c^3}$

Explanation:

Using the exponent rules:

$\frac{x^m}{x^n}=x^{m-n}$

and:

$x^{-m}=\frac{1}{x^m}$

Gives:

$(12/4)a^{6-1}b^{2-7}c^{3-6}=3a^5b^{-5}c^{-3}=\frac{3a^5}{b^5c^3}$

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Example Question #416 : Exponents

Simplify: $15^8*15^{12}$

Possible Answers:

$15^{24}$

$15^{96}$

$225^{20}$

$15^{20}$

$225^{96}$

Correct answer:

$15^{20}$

Explanation:

When multiplying exponents with the same base, we just add the exponents and keep the base the same.

$15^8*15^{12}=15^{8+12}=15^{20}$

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Example Question #417 : Exponents

Simplify: $12^{-12}*12^{-9}$

Possible Answers:

$12^{-3}$

$12^{108}$

12^7

$12^{-14}$

$12^{-21}$

Correct answer:

$12^{-21}$

Explanation:

When multiplying exponents with the same base, we just add the exponents and keep the base the same.

$12^{-12}*12^{-9}=12^{-12+(-9)}=12^{-21}$

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Example Question #418 : Exponents

Simplify: $3^{-10}*3^{19}$

Possible Answers:

$3^{-90}$

$3^{-19}$

$3^{-29}$

3^9

3^7

Correct answer:

3^9

Explanation:

When multiplying exponents with the same base, we just add the exponents and keep the base the same.

$3^{-10}*3^{19}=3^{-10+19}=3^9$

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Algebra II : Exponents

Study concepts, example questions & explanations for Algebra II

All Algebra II Resources

Example Questions

Example Question #411 : Exponents

Example Question #412 : Exponents

Example Question #413 : Exponents

Example Question #414 : Exponents

Example Question #415 : Exponents

Example Question #85 : Simplifying Exponents

Example Question #86 : Simplifying Exponents

Example Question #416 : Exponents

Example Question #417 : Exponents

Example Question #418 : Exponents

All Algebra II Resources

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