Respuesta :

raheemwinston

Answer:Isolate the radical expression.

Square both sides of the equation: If x = y then x2 = y2.

Once the radical is removed, solve for the unknown.

Check all answers.

x=14,-4

Step-by-step explanation:

ghanami

Answer:

x=14 or x= -4

Step-by-step explanation:

hello :

(x - 5)² = 81   equivalent to : (x - 5)² - 9² =0

by identity : a²-b² = (a-b)(a+b)

(x-5-9)(x-5+9) = 0

(x-14)(x+4) = 0

x-14 = 0 or x+4=0

x=14 or x= -4