Answer Key 9.1

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

License

Icon for the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License

Intermediate Algebra by Terrance Berg is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

Share This Book