Question 1 of 5Simplify
$$\sqrt{169},\sqrt{225},-\sqrt{400}$$ $$\sqrt{169}$$$$\sqrt{225}$$$$-\sqrt{400}$$
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Select the Correct Answer Below: Correct! Not Correct!
A
$$\sqrt{169}=9,\sqrt{225}=18,-\sqrt{400}=-10$$ $$\sqrt{169}=9$$$$\sqrt{225}=18$$$$-\sqrt{400}=-10$$
B
$$\sqrt{169}=13,\sqrt{225}=15,-\sqrt{400}=-20$$ $$\sqrt{169}=13$$$$\sqrt{225}=15$$$$-\sqrt{400}=-20$$
C
$$\sqrt{169}=21,\sqrt{225}=18,-\sqrt{400}=-15$$ $$\sqrt{169}=21$$$$\sqrt{225}=18$$$$-\sqrt{400}=-15$$
D
$$\sqrt{169}=11,\sqrt{225}=19,-\sqrt{400}=-40$$ $$\sqrt{169}=11$$$$\sqrt{225}=19$$$$-\sqrt{400}=-40$$
E
$$\sqrt{169}=17,\sqrt{225}=23,-\sqrt{400}=-25$$ $$\sqrt{169}=17$$$$\sqrt{225}=23$$$$-\sqrt{400}=-25$$
Question 2 of 5Simplify
$$\sqrt[3]{729},\sqrt[3]{-343},-\sqrt[3]{1331}$$ $$\sqrt[3]{729}$$$$\sqrt[3]{-343}$$$$-\sqrt[3]{1331}$$
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Select the Correct Answer Below: Correct! Not Correct!
A
$$\sqrt[3]{729}=12,\sqrt[3]{-343}=-14,-\sqrt[3]{1331}=-19$$ $$\sqrt[3]{729}=12$$$$\sqrt[3]{-343}=-14$$$$-\sqrt[3]{1331}=-19$$
B
$$\sqrt[3]{729}=7,\sqrt[3]{-343}=9,-\sqrt[3]{1331}=-17$$ $$\sqrt[3]{729}=7$$$$\sqrt[3]{-343}=9$$$$-\sqrt[3]{1331}=-17$$
C
$$\sqrt[3]{729}=9,\sqrt[3]{-343}=-7,-\sqrt[3]{1331}=-11$$ $$\sqrt[3]{729}=9$$$$\sqrt[3]{-343}=-7$$$$-\sqrt[3]{1331}=-11$$
D
$$\sqrt[3]{729}=20,\sqrt[3]{-343}=-11,-\sqrt[3]{1331}=-19$$ $$\sqrt[3]{729}=20$$$$\sqrt[3]{-343}=-11$$$$-\sqrt[3]{1331}=-19$$
E
$$\sqrt[3]{729}=11,\sqrt[3]{-343}=-11,-\sqrt[3]{1331}=-23$$ $$\sqrt[3]{729}=11$$$$\sqrt[3]{-343}=-11$$$$-\sqrt[3]{1331}=-23$$
Question 3 of 5Simplify
$$\sqrt[4]{625},\sqrt[5]{-243},-\sqrt[7]{128}$$ $$\sqrt[4]{625}$$$$\sqrt[5]{-243}$$$$-\sqrt[7]{128}$$
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Select the Correct Answer Below: Correct! Not Correct!
A
$$\sqrt[4]{625}=25,\sqrt[5]{-243}=-9,-\sqrt[7]{128}=-7$$ $$\sqrt[4]{625}=25$$$$\sqrt[5]{-243}=-9$$$$-\sqrt[7]{128}=-7$$
B
$$\sqrt[4]{625}=4,\sqrt[5]{-243}=-7,-\sqrt[7]{128}=2$$ $$\sqrt[4]{625}=4$$$$\sqrt[5]{-243}=-7$$$$-\sqrt[7]{128}=2$$
C
$$\sqrt[4]{625}=5,\sqrt[5]{-243}=-3,-\sqrt[7]{128}=-2$$ $$\sqrt[4]{625}=5$$$$\sqrt[5]{-243}=-3$$$$-\sqrt[7]{128}=-2$$
D
$$\sqrt[4]{625}=10,\sqrt[5]{-243}=-11,-\sqrt[7]{128}=-15$$ $$\sqrt[4]{625}=10$$$$\sqrt[5]{-243}=-11$$$$-\sqrt[7]{128}=-15$$
E
$$\sqrt[4]{625}=13,\sqrt[5]{-243}=-6,-\sqrt[7]{128}=-4$$ $$\sqrt[4]{625}=13$$$$\sqrt[5]{-243}=-6$$$$-\sqrt[7]{128}=-4$$
Question 4 of 5Simplify
$$\sqrt{9^2+8^2-1}$$
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Select the Correct Answer Below: Correct! Not Correct!
A
$$1$$
B
$$7$$
C
$$12$$
D
$$31$$
E
$$144$$
Question 5 of 5Simplify
$$\sqrt[3]{(3x^2-2x-1)^3}$$
Finish »
Select the Correct Answer Below: Correct! Not Correct!
A
$$3x-1$$
B
$$15x$$
C
$$2x(3x-1)$$
D
$$3x^2-2x-1$$
E
$$27x^6-8x^3-1$$

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