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Solmyr

  • 3 years ago

Simplify: sqrt c (3 + 2sqrt 5) 5 sqrt 5c C sqrt 3 + c sqrt 10 3 sqrt c + 2 sqrt 5c 3 sqrt c + 2c sqrt 5

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  1. ajprincess
    • 3 years ago
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    Use distributive property a(b+c)+ab+ac Here a=sqrtc b=3 c=2sqrt5 Does that help? @Solmyr

  2. Solmyr
    • 3 years ago
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    srry had to do something

  3. Solmyr
    • 3 years ago
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    Sqrt c(3 + 2 sqrt 5) + sqrt c(3) + sqrt c(2 sqrt 5)

  4. phi
    • 3 years ago
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    it is best to put the numbers in front of the sq rt sign, it's less confusing Sqrt c(3 + 2 sqrt 5) = 3sqrt c + 2 sqrt c sqrt 5 you should know that \[ \sqrt{a} \cdot \sqrt{b} = \sqrt{a\cdot b} \] That rule means you can combine sqrt(c)*sqrt(5)

  5. Solmyr
    • 3 years ago
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    ok

  6. Solmyr
    • 3 years ago
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    i was thinking that the answer was A and still thinking because of what u showed

  7. Solmyr
    • 3 years ago
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    ok

  8. phi
    • 3 years ago
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    I thought A was B. But A is not correct. the answer is 3sqrt c + 2 sqrt c sqrt 5 or a simplified version of this

  9. Solmyr
    • 3 years ago
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    ok so D??

  10. phi
    • 3 years ago
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    rewrite \[ 3\sqrt c + 2 \sqrt c \sqrt 5\] by putting the c and 5 inside the same sqrt

  11. Solmyr
    • 3 years ago
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    ok

  12. Solmyr
    • 3 years ago
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    do you have time to help me with two more?

  13. phi
    • 3 years ago
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    first, did you finish this one? put the c and 5 inside the same sqrt \[3\sqrt c + 2 \sqrt c \sqrt 5\]

  14. phi
    • 3 years ago
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    you can do that only for the 2nd term.

  15. Solmyr
    • 3 years ago
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    3 sqrt c + 2 sqrt 5c

  16. phi
    • 3 years ago
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    ok, that should match one of your choices

  17. Solmyr
    • 3 years ago
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    C

  18. phi
    • 3 years ago
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    so to do this, you distributed and then you combined two sq rt's

  19. phi
    • 3 years ago
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    please post your other question separately

  20. Solmyr
    • 3 years ago
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    ok

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