Solve x^2+6x+15=0 using the quadratic formula

asked Sep 20, 2018 114k views

2 votes

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2 votes

no real solutions is your answer

Knocked Loose answered Sep 21, 2018

8.4k points

6 votes

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

Hassan Saleh answered Sep 25, 2018

7.9k points

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