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Skysthelimit

  • 3 years ago

Solve. x^2 + 8x = 24 –4 ± 2 √ 2 –4 ± 2√ 10 –4 ± 2√ 5 –4 ± 2√ 7

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  1. Skysthelimit
    • 3 years ago
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    would it be the 2nd one?

  2. AnimalAin
    • 3 years ago
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    Move the constant term to the LHS and use the quadratic formula, or complete the square.

  3. Skysthelimit
    • 3 years ago
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    I know how to do it just looking for someone to check my answer and make sure its correct

  4. AnimalAin
    • 3 years ago
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    \[x^2 + 8x = 24 \implies x^2 + 8x +16=24+16 \implies (x+4)^2=40\] \[\implies x+4= \pm \sqrt{40} \implies x=4 \pm \sqrt{40}\]

  5. AnimalAin
    • 3 years ago
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    \[4 \pm \sqrt{40} =4 \pm 2 \sqrt {10}\]

  6. AnimalAin
    • 3 years ago
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    Do math every day.

  7. Skysthelimit
    • 3 years ago
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    ok so I was correct then :) thank you

  8. AnimalAin
    • 3 years ago
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    No sweat.

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