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rockets31

  • 3 years ago

how do you solve an equation by using square roots.

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  1. cwrw238
    • 3 years ago
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    heres an example solve for x: (x - 3)^2 = 25 take the square root of both sides: x - 3 = 5 or x - 3 = -5 these are easily solved - don't forget there are 2 square roots positive and negative

  2. rockets31
    • 3 years ago
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    ok thank you!! how would you solve one with an integer before the x^2 such as 4x^2 +4x+1=75

  3. cwrw238
    • 3 years ago
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    you need to factor 4x^2 +4x+1 to see if its a perfect square it is in fact it equals (2x + 1)^2 - now proceed as in first example

  4. rockets31
    • 3 years ago
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    ok thank you!!

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