1. Zero row
row 2 is all zero.
3x3 with full row of zeros
2 visual steps / zero row shortcut
2. Stop early
det = 0.
Practice Level 7
A few quick rounds make the products familiar; the sign is the only thing to guard.
Start Level2 visual steps / zero row shortcut
row 2 is all zero.
det = 0.
A few quick rounds make the products familiar; the sign is the only thing to guard.
Start Level