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Anonymous
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They intersect at the point of: (-3/2, 11/4)
x2 + 10x + 21 = (x + 3)(x + 7)
x + 13x + 10x = 50 - 6
5x + 4 = 10x - 5 10x - 5x = 4 + 5 5x = 9 x = 1.8
6-x+12 = 10x+7 6+12-7 = 10x+x 11 = 11x x = 1