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x2-2x-5.25 = 0

When factored:

(x-7/2)(x+3/2) = 0

Therefore: x = 7/2 and also x = -3/2

To solve a quadratic equation use the formula:

x = -b/2a + and also - the square root of b2-4ac over 2a

Whereas in this particular equation: a = 1, b = -2 and c = -5.25

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15y ago

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