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ahoymewmew

  • 3 years ago

can someone help me with radicals? please :(

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  1. Calle87
    • 3 years ago
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    hey

  2. ahoymewmew
    • 3 years ago
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    hello @Calle87

  3. Calle87
    • 3 years ago
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    question?

  4. ahoymewmew
    • 3 years ago
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    its this. @Calle87

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  5. christiano123
    • 3 years ago
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    okay whats the question

  6. ahoymewmew
    • 3 years ago
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    its in the attachment. @christiano123

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  7. Calle87
    • 3 years ago
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    ok, so i have row d done

  8. Calle87
    • 3 years ago
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    \[\sqrt{18}+2\sqrt{75}-\sqrt{48}\]

  9. ahoymewmew
    • 3 years ago
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    okay c: @Calle87 thanks.

  10. Calle87
    • 3 years ago
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    so with radicals you can simplify each one by splitting them into smaller radicals

  11. Calle87
    • 3 years ago
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    \[\sqrt{18}=\sqrt{9}\sqrt{2}=3\sqrt{2}\]

  12. ahoymewmew
    • 3 years ago
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    like the square root of 18, is a decimal so you break it down and use a number that equals to 18 like 9x2 and since its still big you can simplify 9x3? @Calle87

  13. Calle87
    • 3 years ago
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    \[2\sqrt{75}=2(\sqrt{25})(\sqrt{3})=2(5)\sqrt{3}=10\sqrt{3}\]

  14. Calle87
    • 3 years ago
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    ya see what i did?

  15. Calle87
    • 3 years ago
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    \[\sqrt{9}\sqrt{2}\]

  16. Calle87
    • 3 years ago
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    whats the square root of 9?

  17. ahoymewmew
    • 3 years ago
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    3 @Calle87

  18. ahoymewmew
    • 3 years ago
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    so 2 cant be simplified but 9 can oh i see

  19. Calle87
    • 3 years ago
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    ya they dont want decimals

  20. Calle87
    • 3 years ago
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    you want the largest possible square root with the smallest

  21. Calle87
    • 3 years ago
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    ie 9 and 2 for 18

  22. ahoymewmew
    • 3 years ago
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    aha i just dont understand the last one were it has y @Calle87

  23. Calle87
    • 3 years ago
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    ok so the last one,

  24. ahoymewmew
    • 3 years ago
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    yea @Calle87 the y's confuse me with the exponents.

  25. Calle87
    • 3 years ago
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    \[3(\sqrt{2y})(\sqrt{y^2})\]

  26. Calle87
    • 3 years ago
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    \[\sqrt{2y^3}=\sqrt{2y}\sqrt{y^2}\]

  27. Calle87
    • 3 years ago
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    see what i did?

  28. ahoymewmew
    • 3 years ago
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    and what if there is a number on the outside of the sqrt and one on the inside? do you just bring the outside one down and fin the sqrt of the inside? @Calle87

  29. Calle87
    • 3 years ago
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    \[3(\sqrt{2y})(\sqrt{y^2})\]

  30. Calle87
    • 3 years ago
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    what is the square root of y^2?

  31. ahoymewmew
    • 3 years ago
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    is it y?

  32. Calle87
    • 3 years ago
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    yes!! :)

  33. Calle87
    • 3 years ago
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    \[3(\sqrt{2y})(y)\]

  34. Calle87
    • 3 years ago
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    \[3y \sqrt{2y}\]

  35. Calle87
    • 3 years ago
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    first expression is simplified

  36. Calle87
    • 3 years ago
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    can you do the 2nd?

  37. ahoymewmew
    • 3 years ago
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    oh i get it is the second one A? i think it is c: @Calle87

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  38. Calle87
    • 3 years ago
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    of the last row

  39. ahoymewmew
    • 3 years ago
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    the last one? @Calle87

  40. Calle87
    • 3 years ago
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    it is c

  41. Calle87
    • 3 years ago
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    the second one is C

  42. Calle87
    • 3 years ago
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    the last row is E

  43. Calle87
    • 3 years ago
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    fourth row is D

  44. ahoymewmew
    • 3 years ago
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    oh i thought it was a because of the 3 and the 4 sqrt

  45. Calle87
    • 3 years ago
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    what are you asking?

  46. ahoymewmew
    • 3 years ago
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    because i saw the second one say 3y sqrt 4y and i thought it was the first one because it said 3 sqrt 2 because 4's sqrt is 2.

  47. Calle87
    • 3 years ago
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    so you are having problems with the second row?

  48. ahoymewmew
    • 3 years ago
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    no i got an a c: thanks :D

  49. Calle87
    • 3 years ago
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    ok, so no more?

  50. ahoymewmew
    • 3 years ago
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    yea no more thanks :D i understand them now c:

  51. Calle87
    • 3 years ago
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    cool! great job @ahoymewmew

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