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Q: What is x squared minus 2x plus 5 equals 0?

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3x2 + 2x - 8 = 0 is a quadratic equation.

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(x + 5)(2x - 1)

(2x - 3)(x + 2)

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(x - 2)(2x + 7)

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

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2x2 + 2x - 8 = 2(x2 + x - 4). This can take any value greater than or equal to -8.5

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2x squared minus 5x minus 3 factored is (2x+1)(x-3).

There is no rational factorisation.

(x - 2)(2x - 3)

(2x - 1)(x + 3)

(x - 3)(2x - 7)

(2x - 9)(2x - 9) or (2x - 9)2

There's an equals missing...

Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.

2x squared - 5x - 3 = (2x +1)(x -3)