Question

X^2+9=0

Please Factor
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Answer 1

`{x}^(2) + 9 \\ \\ = {x}^(2) + 3 {}^(2) \\ \\ = (x + 3)(x - 3)`

Answer 2

`{x}^(2) + 9 = 0`

`{x}^(2) + 9`

`{x}^(2) + {3}^(2)`

`(x + 3)(x + 3)`