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Kelly Guzman
Mathematics
26 May, 21:46
Factor completely x2 + 25
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Lilly Hoover
26 May, 21:55
0
(x - 5i) (x + 5i)
Step-by-step explanation:
Write this as x^2 + 25. Solving for x^2, we get x^2 = - 25.
Recall that the square root of a negative number is an imaginary one. √ (-25) equals ±5i (there are two roots, one positive and one negative).
Then x = ±5i.
In factored form, the given expression is (x - 5i) (x + 5i).
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