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10 cards from this deck
1
2
ax2+bx+c=0ax^2 + bx + c = 0ax2+bx+c=0
Two
Solve one eq. for one var., substitute into other
Add or subtract equations to eliminate one variable
Contains several letters; solve for one in terms of others
Uses inequality symbols (<<<, >>>, ≤\leq≤, ≥\geq≥) not equals
Inequality sign direction changes (flips)
Two (can have 0, 1, or 2)
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