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Warm-up: Factor each trinomial. 1. x 2 + 9x + 20 2. y 2 - 5y - 6 3. a 2 + 7a - 5 4. x 2 y 2 - 7xy - 30. Answers. 1. (x+5)(x+4) 2. (y-6)(y+1) 3. prime 4. (xy-10)(xy+3).
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Warm-up: Factor each trinomial. • 1. x2 + 9x + 20 • 2. y2 - 5y - 6 • 3. a2 + 7a - 5 • 4. x2y2 - 7xy - 30
Answers • 1. (x+5)(x+4) • 2. (y-6)(y+1) • 3. prime • 4. (xy-10)(xy+3)