(c2 + 11)(c2 - 11)
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11 times 11 equals 121
Yes, 13 does go into 121. When you divide 121 by 13, you get a quotient of 9 with no remainder. This is because 13 multiplied by 9 equals 121. Therefore, 13 is a factor of 121.
The number that equals 121 when squared is 11.
If: 11y = 121 Then: y = 11
121 is the answer