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Q: How do you solve x-3 plus 7 equals 2?

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-2 plus 5 equals +3

Suppose x3-4x = 0. To solve, factor: x3-4x = x(x2-4) = x(x+2)(x-2) = 0 Now, a product equals 0 if and only one or more of the factors equals 0, so set each factor to 0 and solve. The roots are 0,-2 and +2.

(xn+2-1)/(x2-1)

x3 + x2 - x = 0 ∴ x2 + x - 1 = 0 ∴ x2 + x + 0.25 = 1.25 ∴ (x + 0.5)2 = 1.25 ∴ x + 0.5 = ± 1.251/2 ∴ x = -0.5 ± 1.251/2

(x - 1)(x^2 - 5x + 2)

3

3

The answer is x = 2.

n= -2

3 + 2 + 25*3 - 6 = 3 + 2 + 75 - 6 = 74

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