Question

X^2+6x=-22 witch of the following is a solution

Answer 1

x1=-3+i*sqrt(13)

x2=-3-i*sqrt(13)

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)