# -1 = 1 LOL!!!

Level 1

STEP 1: 1 = 1

STEP 2: 1 = $\sqrt { 1 }$

STEP 3: 1 = $\sqrt { -1\times -1 }$

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

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

STEP 6: 1 = -1

Question: THE ERROR IS IN WHICH STEP?

×