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Nia tried to write 26-2² as a product of linear factors. This is her work:
= x²(x - 1)
=
= x²(x² + 1)(x² − 1)
= x²(x + i)(x + i)(x² − 1)
= x²(x + i)(x+ i)(x+1)(x-1) Step 4
Step 1
Step 2
Step 3
In what step did Nia make her first mistake?