Answer Key 9.1

  1. [latex]\sqrt{5\cdot 49}[/latex]
    [latex]\pm 7\sqrt{5}[/latex]
  2. [latex]\sqrt{5\cdot 25}[/latex]
    [latex]\pm 5\sqrt{5}[/latex]
  3. [latex]2\cdot (\pm 6)[/latex]
    [latex]\pm 12[/latex]
  4. [latex]5\cdot (\pm 14)[/latex]
    [latex]\pm 70[/latex]
  5. [latex]\sqrt{4\cdot 3}[/latex]
    [latex]\pm 2\sqrt{3}[/latex]
  6. [latex]\sqrt{36\cdot 2}[/latex]
    [latex]\pm 6\sqrt{2}[/latex]
  7. [latex]3\sqrt{4\cdot 3}[/latex]
    [latex]3\cdot 2\sqrt{3}[/latex]
    [latex]\pm 6\sqrt{3}[/latex]
  8. [latex]5\sqrt{16\cdot 2}[/latex]
    [latex]5\cdot 4\sqrt{2}[/latex]
    [latex]\pm 20\sqrt{2}[/latex]
  9. [latex]6\sqrt{64\cdot 2}[/latex]
    [latex]6\cdot 8\sqrt{2}[/latex]
    [latex]\pm 48\sqrt{2}[/latex]
  10. [latex]7\sqrt{64\cdot 2}[/latex]
    [latex]7\cdot 8\sqrt{2}[/latex]
    [latex]\pm 56\sqrt{2}[/latex]
  11. [latex]-7\cdot 8x^2[/latex]
    [latex]\pm 56x^2[/latex]
  12. [latex]-2\sqrt{64\cdot 2\cdot n}[/latex]
    [latex]-2\cdot 8\sqrt{2n}[/latex]
    [latex]\pm 16\sqrt{2n}[/latex]
  13. [latex]-5\cdot 6\sqrt{m}[/latex]
    [latex]\pm 30\sqrt{m}[/latex]
  14. [latex]8\sqrt{7\cdot 16\cdot p^2}[/latex]
    [latex]8\cdot 4\cdot p\sqrt{7}[/latex]
    [latex]\pm 32p\sqrt{7}[/latex]
  15. [latex]\sqrt{5\cdot 9\cdot x^2\cdot y^2}[/latex]
    [latex]\pm 3xy\sqrt{5}[/latex]
  16. [latex]\sqrt{2\cdot 36\cdot a\cdot a^2\cdot b^4}[/latex]
    [latex]\pm 6ab^2\sqrt{2a}[/latex]
  17. [latex]\sqrt{16\cdot x^2\cdot x\cdot y^2\cdot y}[/latex]
    [latex]\pm 4xy\sqrt{xy}[/latex]
  18. [latex]\sqrt{2\cdot 256\cdot a^4\cdot b^2}[/latex]
    [latex]\pm 16a^2b\sqrt{2}[/latex]
  19. [latex]\sqrt{5\cdot 64\cdot x^4\cdot y^4}[/latex]
    [latex]\pm 8x^2y^2\sqrt{5}[/latex]
  20. [latex]\sqrt{2\cdot 256\cdot m^4\cdot n^2\cdot n}[/latex]
    [latex]\pm 16m^2n\sqrt{2n}[/latex]

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