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8 cards from this deck
ax+bcx+d\frac{ax+b}{cx+d}cx+dax+b (ratio of two linear functions)
Don't know if it's positive or negative
Determines whether to switch inequality sign
Multiply both sides by (x+2)2(x+2)^2(x+2)2
Any expression squared is guaranteed to be positive
Don't have to switch the inequality sign
Cancel common factor of (x+2)(x+2)(x+2)
Quadratic formula
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