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Bogdan [553]
3 years ago
5

what are the exact solutions of x^2 = 4 − 7x? x = x equals negative 7 plus or minus the square root of thirty-three all over 2 x

= x equals negative 7 plus or minus the square root of sixty-five all over 2 x = x equals 7 plus or minus the square root of sixty-five all over 2 x = x equals 7 plus or minus the square root of thirty-three all over 2
Mathematics
1 answer:
Archy [21]3 years ago
4 0
             x² = -7x + 4
x² + 7x - 4 = 0
x = -7 ± √(7² - 4(1)(-4))
                 2(1)
x = -7 ± √(49 + 16)
               2
x = -7 ± √(65)
             2
x ≈ -7 ± 8.06
           2
x ≈ -3.5 ± 4.03
x ≈ -3.5 + 4.03    or    x ≈ -3.5 - 4.03
x ≈ 0.53         or         x ≈ -7.53
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