Solve the equation by completing the square s^2+2s-6=0

Mathematics

1 answer:

Valentin [98]3 years ago

4 0

Answer:

s=√7-1

s=-(√7+1)

Step-by-step explanation:

s^2+2s-6=0

or,s^2+2.s.1+1^2=6+1^2

or,(s+1)^2=6+1

or,(s+1)^2=7

or,(s+1)^2=(±√7)^2

or,s+1=±√7

either,

s=√7-1

or,

s=-(√7+1)

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