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Find the value of each expression when `x = 6`:

`x^2 + 1 = `

`(x + 1)^2 = `

`x^2 + 2x + 1 = `

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   x  x  √  n√  |   | (   ) π ∞ DNE
   x  √  (   ) π ∞ DNE
( ) ( ] [ ) [ ] —∞ ∞ ∪ DNE
< > ≤ ≥ or All Real Numbers DNE
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