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Got root? w/quadratic on back Men's Sleeveless Tee Front: got root? Back: derivation of the quadratic formula by completing the square. For the math nerd or math teacher who is fascinated by quadratics ;) $20.95 Size:  Size Chart Medium Large X-Large Qty:    AVAILABILITY: Product Number: 55388623 Product Information Fit: Standard Not too tight, not too loose. Fabric Thickness: Beat the summer heat or workout in comfort. Our 100% cotton sleeveless tee from Anvil is what to wear when you want to go casually cool. 6.1 oz. 100% cotton Standard fit