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anonymous

  • 5 years ago

Solve: if the product of the square is a positive number and 7 is 21, then what is the number?

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  1. anonymous
    • 5 years ago
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    product means multiply and is means "equals".... 7x^2 = 21, then solve

  2. anonymous
    • 5 years ago
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    dont get it

  3. anonymous
    • 5 years ago
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    first divide both sides by 7

  4. anonymous
    • 5 years ago
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    ok so that is...3 and ...?

  5. anonymous
    • 5 years ago
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    that gives you x^2 = 3. Then to solve, take the square root of both sides

  6. anonymous
    • 5 years ago
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    x = 3 and -3, but the problem said it had to be a positive number, so 3 is the answer

  7. anonymous
    • 5 years ago
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    ok thank you

  8. anonymous
    • 5 years ago
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    you're welcome

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spraguer (Moderator)
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