birchjoy22 birchjoy22

15-08-2021
Mathematics

contestada

Solve the problem please

Solve the problem please class=

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

15-08-2021

Answer:

x = 9±sqrt(7)

Step-by-step explanation:

3(x-9)^2 =21

Divide each side by 3

3/3(x-9)^2 =21/3

(x-9)^2 =7

Take the square root of each side

sqrt((x-9)^2) =±sqrt(7)

x-9 =±sqrt(7)

Add 9 to each side

x = 9±sqrt(7)

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