lesliegaspar225 lesliegaspar225

10-06-2020
Mathematics

contestada

solve 2x^2-4x-18=0 by completing the square. round the solutions to the nearest hundredth

Respuesta :

mhanifa mhanifa

14-06-2020

Answer:

1-√10

1+√10

Step-by-step explanation:

2x^2-4x-18=0
x^2-2x-9=0
x^2-2x+1-10=0
(x-1)^2-10=0
(x-1+√10)(x-1-√10)=0
x=1-√10
x=1+√10

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