3 years ago

What value(s) of x make the equation x2 - 18x + 81 = 0 true?

Mathematics

2 answers:

gayaneshka [121]3 years ago

8 0

X^2 - 18x + 81 = 0
x^2 - 9x - 9x + 81 = 0
x(x - 9) - 9(x - 9) = 0
(x - 9)(x - 9) = 0
(x - 9)^2 = 0
x - 9 = 0
x = 9

ira [324]3 years ago

6 0

Answer:

the answer is 9

Step-by-step explanation:

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