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5 July, 14:23

Solve x2 + 8x - 3 = 0 using the completing-the-square method

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  1. 5 July, 15:48
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    Hello:

    x²+8x-3=0

    (x² + 2 (4) x + 4²) - 4² - 3 = 0

    (x+4) ²-19 = 0

    (x+4) ² = 19

    x+4 = √19 or x+4 = - √19

    x = √19 - 4 or x = - √19 - 4
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