-1 = 1 LOL!!!

Level 1

STEP 1: 1 = 1

STEP 2: 1 = 1\sqrt { 1 }

STEP 3: 1 = 1×1\sqrt { -1\times -1 }

STEP 4: 1 = 1×1\sqrt { -1 } \times \sqrt { -1 } or i×ii\quad \times \quad i

STEP 5: 1= (1)2{ \left( \sqrt { -1 } \right) }^{ 2 } or i2{ i }^{ 2 }

STEP 6: 1 = -1

Question: THE ERROR IS IN WHICH STEP?

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