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Anonymous
2x2 + 10x + 25 is a quadratic expression. It describes a parabola.
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10x+7 = 5x+32 10x-5x = 32-7 5x = 25 x = 5
10x - 25 = 4x + 510x - 4x = 25 + 56x = 30x = 5
25
(x + 5)2
(x+5)^2 and therefore x = -5