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13-05-2020
Mathematics

contestada

X^2 - 18x + 81 = 0 x=?

Respuesta :

zrh2sfo zrh2sfo

13-05-2020

Answer:

x = 9

Step-by-step explanation:

Solve for x:

x^2 - 18 x + 81 = 0

Write the left hand side as a square:

(x - 9)^2 = 0

Take the square root of both sides:

x - 9 = 0

Add 9 to both sides:

Answer: x = 9

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