EDGE Math 8

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Click on your answer to each question.

1.	What is the simplest form of $\frac{x^{2} y^{5}}{x^{4} y^{3}} ?$

\frac{x^{2}}{y^{2}}

\frac{y^{2}}{x^{2}}

\frac{1}{x^{2} y^{2}}

x^{2} y^{2}

Answer: $\frac{y^{2}}{x^{2}}$

2.	What is the simplest form of ${(5 m^{2} n^{3})}^{2} ?$

5 m^{4} n^{6}

5 m^{4} n^{5}

25 m^{4} n^{5}

25 m^{4} n^{6}

Answer: $25 m^{4} n^{6}$

3.	Which of the following is not equal to $\frac{1}{81} ?$

\frac{1}{3^{4}}

3^{- 4}

\frac{1}{3^{- 4}}

\frac{1}{{(3^{2})}^{2}}

Answer: $\frac{1}{3^{- 4}}$

4.	Which of the following expressions is $(4 p - 11 q) (4 p + 11 q)$ equal to?

16 p^{2} - 121 q^{2}

16 p^{2} + 121 q^{2}

16 p^{2} - 44 p q - 11 q^{2}

16 p^{2} + 44 p q - 11 q^{2}

Answer: $16 p^{2} - 121 q^{2}$

5.	What is $(2 x + 9) (4 x - 7)$ equal to?

8 x^{2} - x - 63

8 x^{2} - 22 x - 16

8 x^{2} - 22 x - 63

8 x^{2} + 22 x - 63

Answer: $8 x^{2} + 22 x - 63$

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