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Question 1 of 5: Find the GCF.
$$-9x^2y, 45xy$$
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Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
$$9xy$$
B
$$18xy$$
C
$$18x^2y$$
D
$$45x^2y$$
E
$$15xy$$
Question 2 of 5: Find the GCF.
$$14x^2y^3, 56x^2y^5z^7, 112xz$$
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A
$$14x$$
B
$$112x^2y^5z^7$$
C
$$182 x^2y^4z$$
D
$$87, \hspace{-.1em}808x^5y^8z^8$$
E
$$7x$$
Question 3 of 5: Factor Out the GCF.
$$12x^2y^2z + 20x^2y^3z^4 - 4xy$$
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A
$$12x^2y^2\left(1 + \frac{5}{3y}- \frac{1}{3xy}\right)$$
B
$$12xy(xyz + 6xy^2z^4 - 3)$$
C
$$4x^2y^2\left(3z + 5yz^4 - \frac{1}{x}\right)$$
D
$$4x^2y^3z^4\left(\frac{3}{z^3}+ 5 - \frac{1}{xy^2z^4}\right)$$
E
$$4xy(3xyz + 5xy^2z^4 - 1)$$
Question 4 of 5: Factor Out the GCF.
$$9x^6y^2 - 63x^3y - 90x^2y$$
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A
$$630x^6y^2(70 - 10x^3y - 7x^4y)$$
B
$$7x^2y^2\left(x^4 - x - \frac{10}{y}\right)$$
C
$$9x^2y(x^4y - 7x - 10)$$
D
$$9x^2y^2\left(x^4 - \frac{7x}{y}- \frac{10}{y}\right)$$
E
$$-630x^6y^2(70 +10x^3y + 7x^4y)$$
Question 5 of 5: Factor Out the GCF.
$$6(x + 1) + 9(x + 1)$$
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Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
$$15(x + 1)$$
B
$$(6x + 6)(9x + 9)$$
C
$$(3x - 1)(x + 2)$$
D
$$3(x + 1)$$
E
$$3(x^2 + 5)$$

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