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Factor polynomials: complex numbers


Shayla tried to write x425 as a product of linear factors. This is her work:
=x425=(x2+5)(x25)Step 1=(x2+5)(x+5)(x5)Step 2=(x+5i)(x5i)(x+5)(x5)Step 3
In what step did Shayla make her first mistake?
Choose 1 answer: