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anonymous

  • 4 years ago

is x^2 = 100 x={-10,10} or {10}

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  1. anonymous
    • 4 years ago
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    first one

  2. anonymous
    • 4 years ago
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    well (-10)^2 = 100 also, so both.

  3. saifoo.khan
    • 4 years ago
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    A.

  4. anonymous
    • 4 years ago
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    so how do you know if there are parentheses around the -10

  5. anonymous
    • 4 years ago
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    um...for just x^2 = 100. you assume both. the difference is are you squaring -10 or are you doing something like 0 - 10^2

  6. anonymous
    • 4 years ago
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    umm k

  7. slaaibak
    • 4 years ago
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    you know there's brackets, because x^2 = x * x Therefore -10 * -10 = (-10)^2

  8. anonymous
    • 4 years ago
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    "A negative times a negative equals a positive" 10 x 10 equals 100, and -10 x -10 also equals 100.

  9. slaaibak
    • 4 years ago
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    ^\[A^2\]

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spraguer (Moderator)
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