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BMI229
 one year ago
Solve for x: (x  9)2 = 1
BMI229
 one year ago
Solve for x: (x  9)2 = 1

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

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

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

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

LilySwan
 one year ago
Best 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

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

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