EDGE Math 8

Choose the correct factored form of each polynomial.

1.	$b^{2} + 26 b y + 169 y^{2}$

{(b - 13 y)}^{2}

{(b + 13 y)}^{2}

(b + 13) (b - 13)

none of the choices

Answer: ${(b + 13 y)}^{2}$

2.	$64 x^{2} + 48 x + 9$

{(8 x - 3)}^{2}

{(8 x + 3)}^{2}

(8 x + 3) (8 x - 3)

none of the choices

Answer: ${(8 x + 3)}^{2}$

3.	$y^{2} - 16 y x - 36 x^{2}$

(y - 18 x) (y + 2 x)

(y - 9 x) (y + 4 x)

(y - 12 x) (y + 3 x)

none of the choices

Answer: $(y - 18 x) (y + 2 x)$

4.	$12 a^{2} - 29 a b - 8 b^{2}$

(4 a - b) (3 a + 8 b)

(3 a - b) (4 a + 8 b)

(4 a + b) (3 a - 8 b)

none of the choices

Answer: $(4 a + b) (3 a - 8 b)$

5.	$x^{6} - 16 x^{3} + 64$

{(x - 2)}^{2} {(x^{2} + 2 x + 4)}^{2}

{(x - 2)}^{2} {(x^{2} - 2 x + 4)}^{2}

{(x - 2)}^{2} {(x^{2} - 2 x - 4)}^{2}

none of the choices

Answer: ${(x - 2)}^{2} {(x^{2} + 2 x + 4)}^{2}$

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