770173
770173
23-10-2017
Mathematics
contestada
Solve x^2+6x+15=0 using the quadratic formula
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rosecrandell182
rosecrandell182
23-10-2017
no real solutions is your answer
Answer Link
ejelonubenedict
ejelonubenedict
23-10-2017
x = [-b±√b²-4ac]/2a
x= [-6±√{6² -4×1×15} /2×1
x= [-6±√(36- 60)]/2
x= [-6±√-24]/2
x= [-6± í2√6] /2
x = -3±2√6ì
x= -3+2√6ì or x= -3-2√6ì
where ì= √-1
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