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

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

Mertsj
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0sorry yes that is I read it wrong

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

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

electrokid
 2 years 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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