Question

Split the middle term of x²+3x-2

Answer 1

${x}^{2} + 3x - 2 = 0 \\ \\ {x }^{2} + x + 2x - 2 = 0 \\ \\ x(x + 1) - 2(x + 1) = 0 \\ \\ (x - 2)(x + 1) = 0 \\ \\ \\ \\ x - 2 = 0 \\ \\ x = 2 \\ \\ \\ x + 1 = 0 \\ \\ x = - 1$

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Answer 2

Answer:

x^2 + 3x -2 = 0

D = 9 - 4×1×(-2) = 1

α = (-3+√1)/2 = -1

β = (-3-√1)/2 = -2

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