krystinamacias001 krystinamacias001

30-05-2020
Mathematics

contestada

Solve the equation for all values of x by completing the square.
3x^2-60x+255=0

Respuesta :

kimchikaylynkim kimchikaylynkim

30-05-2020

Answer:

x=5 and x=15

Step-by-step explanation:

3x^2-60x+225=0

3x^2-60x+225/3=0/3

x^2-20x+75=0

x^2-5x-15x+75=0

x(x-5)-15(x-5)=0

(x-5)(x-15)=0

x-5=0 x-15=0

x=5 x=15

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