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LilySwan Group TitleBest ResponseYou've already chosen the best response.1
x: (x  9)^2 = 1 Is your question this one
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.0
Why is it that you don't answer the people who try to help you?
 one year ago

BMI229 Group TitleBest ResponseYou've already chosen the best response.0
sorry yes that is I read it wrong
 one year ago

LilySwan Group TitleBest ResponseYou've already chosen the best response.1
x: (x  9)^2 = 1 so this is question
 one year ago

LilySwan Group TitleBest ResponseYou've already chosen the best response.1
(x  9)^2 = 1 (x  9) (x  9) = 1 Now expand the brackets. (x  9) (x  9) = 1 x^2  18x + 81 = 1 Move the 1 across the equal sign x^2  18x + 81 = 1 x^2  18x + 80 = 0 Factor x^2  18x + 80 = 0 (x  8) (x  10) = 0 x = 8 or 10
 one year ago

LilySwan Group TitleBest ResponseYou've already chosen the best response.1
i hope this answer satisfies you
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.0
method 2: \[(x9)^2=1\\ \therefore x9=\pm1\\ \therefore x9=1\qquad\qquad x9=1\\ \therefore x=8\qquad\qquad\qquad x=10 \]
 one year ago
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