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CarlaByrdGore

  • 2 years ago

(sq. root sign) x+3=10

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  1. hartnn
    • 2 years ago
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    is it \(\sqrt x+3=10 \\or,\sqrt {x+3}=10 \)

  2. CarlaByrdGore
    • 2 years ago
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    the second one

  3. hartnn
    • 2 years ago
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    square both sides, what u get ?

  4. CarlaByrdGore
    • 2 years ago
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    so it would be 103?

  5. hartnn
    • 2 years ago
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    did you get x+3 =100 ?

  6. CarlaByrdGore
    • 2 years ago
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    yes and the add three to both sides and x = 103? right

  7. hartnn
    • 2 years ago
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    no, x+3 =100 to isolate 'x' , we need to SUBTRACT 3 from both sides, then what u get ?

  8. CarlaByrdGore
    • 2 years ago
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    oh okay so it is 97

  9. CarlaByrdGore
    • 2 years ago
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    that is where I get confused is whether to add or subtract

  10. hartnn
    • 2 years ago
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    yes.

  11. hartnn
    • 2 years ago
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    x+3 =100 since 3 is ADDED to x, we do inverse operation of SUBTRACTION to isolate x since, x+3-3 = x+0 = x

  12. CarlaByrdGore
    • 2 years ago
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    oh okay thank you I think I got it

  13. hartnn
    • 2 years ago
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    welcome ^_^

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