X square + 4 x minus 5 is equal to zero
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x^2 + 4x - 5 = 0
x^2 -5x + x - 5 = 0
x(x-5) + 1(x-5) = 0
(x+1)(x-5) = 0
Therefore,
x=-1 or x=5
x^2 -5x + x - 5 = 0
x(x-5) + 1(x-5) = 0
(x+1)(x-5) = 0
Therefore,
x=-1 or x=5
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