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Best Answer

X^2 + 4X -7 = 0

needs quadratic equation

-b +/- sqrt(b^2-4ac)/2a

a = 1

b = 4

c = -7

-4 +/- sqrt(4^2-4(1)(-7))/2(1)

-4 +/- sqrt(16+28)/2

-4 +/- sqrt(44)/2

-4 +/2sqrt(11)/2

exact answer, less factoring

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14y ago
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Q: Can you solve the equation x squared plus 4x minus 7 equals 0?
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