mikayla2017 mikayla2017

26-09-2016
Mathematics

Answered

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

9

-9, 9

0, 9

0, -9, 9

Verified Answer :

nobillionaireNobley nobillionaireNobley

28-09-2016

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

Answer Link

iygigdw iygigdw

19-01-2020

Answer:

the answer is 9

Step-by-step explanation:

Answer Link

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