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OpenStudy (anonymous):
Find all solutions of the equation in the complex number system: x^2+4x+4=-9
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jhonyy9 (jhonyy9):
\[x ^{2}+4x +13=0\]
jhonyy9 (jhonyy9):
x_1,_2= (-4+/- sqrt(16-52))/2 =(-4+/- sqrt(-36))/2 = =(-4+/-6i)/2=-2+/-3i
OpenStudy (anonymous):
thanks
jhonyy9 (jhonyy9):
my pleasure
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