Samantha1999 Samantha1999

02-02-2018
Mathematics

contestada

Solve by factoring.

x2 + 6x = - 9. Hint: This is a double root.

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Аноним Аноним

02-02-2018

x^2 + 6x = -9
( x + 3)^2 - 9 = -9
(x + 3)^2 = -9 + 9 = 0

x + 3 = 0

x = -3 ( double root)

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