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Catalina Yoder
Mathematics
1 September, 12:39
X^2+6x=-22 witch of the following is a solution
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Tony Cooke
1 September, 12:52
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x1=-3+i*sqrt (13)
x2=-3-i*sqrt (13)
Step-by-step explanation:
x^2 + 6x=-22
x^2 + 6x+22=0 (Quadratic equation)
a=1, b=6, c=22
x1 = (-b+sqrt (b^2-4ac)) / 2a
x1 = (-6+sqrt (6^2 - 4*1*22)) / 2*1
x1 = (-6+sqrt (36-88)) / 2
x1 = (-6+sqrt (-52)) / 2
x1 = (-6+sqrt (52i^2)) / 2 ... i^2=-1
x1 = (-6+sqrt (4*13i^2)) / 2
x1 = (-6+2i*sqrt (13)) / 2
x1=-3+i*sqrt (13)
x2 = (-b-sqrt (b^2-4ac)) / 2a
x2=-3-i*sqrt (13)
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