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2x2 + 7x - 15 = 0

2x2 + 10x - 3x - 15 = 0

(2x2 - 3x) + (10x - 15) = 0

x(2x - 3) + 5(2x - 3) = 0

(2x - 3)(x + 5) = 0

(2x - 3) = 0 or (x + 5) = 0

x = 3/2 or x = -5

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Q: 2x2 plus 7x - 15 equals 0?
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