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Mathematics
Singleton
30 April, 13:58
Solve x²-121=0
Answer choices
0
-11
11
11,-11
+1
Answers (
1
)
Frosty
30 April, 16:29
0
Answer is 11,-11
x²-121=0
x² - 11²=0
(x + 11) (x-11) = 0
x + 11 = 0 then x = - 11
x - 11 = 0 then x = 11
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