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fiasKO [112]
2 years ago
5

Solve for x: 2xsquared+4x-16=0

Mathematics
1 answer:
sergejj [24]2 years ago
7 0
        2x² + 4x - 16 = 0
2(x²) + 2(2x) - 2(8) = 0
        <u>2(x² + 2x - 8)</u> = <u>0</u>
                  2             2
           x² + 2x - 8 = 0
                          x = <u>-(2) ± √((2)² - 4(1)(-8))</u>
                                               2(1)
                          x = <u>-2 ± √(4 + 32)</u>
                                           2
                          x = <u>-2 ± √(36)
</u>                                       2<u>
</u>                          x = <u>-2 ± 6
</u>                                    2<u>
</u>                          x = -1 ± 3
                          x = -1 + 3    U    x = -1 - 3
                          x = 2                  x = -4
<u />
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