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Question
13. Simplify: [3 / 4]^-1  [-4 / 3]^-2  

a.) 1           b.) 4 / 3

c.) 3 / 4       d.)  -1



14. Write without using fractions:  x^2 / yz^4

a.) x ^2y ^-1z ^-4       b.) x ^-2yz ^4

c.) x ^2yz ^4            d.) x ^-2y ^-1z ^-4



15. Express as a decimal numeral: 1.45 x 10^-2

a.) 0.0145      b.) 1.45

c.) 0.00145     d.) 145



16. Simplify: [(-5^-1)(2^-2)]^2

a.) 0.0010      b.) 2,500

c.) 0.0025      d.) 0.025



17. Simplify: 6xy^-1 / 2x^2y^-1

a.)  3x        b.) 3x^3

b.)  3 / x     d.) -3 / x^3



18. Simplify: (3x^-2y)^-1 / (2xy^-2)^0

a.) 3xy            b.) 3y / x^2

c.) 1 / 3x^2y       d.) x^2 / 3y



19. Simplify: [2pq^-1 / 4q^2] -1

a.) 2 / pq       b.) 8pq^3

c.) p / 2q       d.)  2q^3 / p



20. Simplify: (ax^2)-1 / a^-2x^-2

a.) a        b.) 1 / a

c.) ax       d.) ax^2



21. Replace the ? with a polynomial to make a true statement: 2x ^-2 + x ^-1-3 = x ^-2 (?)

a.)  2 - x - 3x^2        b.) 2 + x - 3x^2

c.)  2 + x + 3x^2        d.) -1 + x



22. Write in scientific notation: 106,000

a.) 1.06 x 10^5       b.) 10.6 x 10^5

c.) 10.6 x 10^5       d.) 1.06 x 10^-5  

Answer
13. Simplify: [3 / 4]^-1  [-4 / 3]^-2  

c.) 3 / 4


14. Write without using fractions:  x^2 / yz^4

a.) x ^2y ^-1z ^-4


15. Express as a decimal numeral: 1.45 x 10^-2

a.) 0.0145     


16. Simplify: [(-5^-1)(2^-2)]^2

c.) 0.0025


17. Simplify: 6xy^-1 / 2x^2y^-1

b.)  3 / x


18. Simplify: (3x^-2y)^-1 / (2xy^-2)^0

d.) x^2 / 3y


19. Simplify: [2pq^-1 / 4q^2] -1

d.)  2q^3 / p


20. Simplify: (ax^2)-1 / a^-2x^-2

a.) a   


21. Replace the ? with a polynomial to make a true statement: 2x ^-2 + x ^-1-3 = x ^-2 (?)

b.) 2 + x - 3x^2



22. Write in scientific notation: 106,000

a.) 1.06 x 10^5  

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