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## Question

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x? a. 1+-/21 i b.-1+-/19i c. 1+-2/19i d. 1+-/19i

## Answer

Answer:The last option is the correct oneExplanation:The general form of the quadratic equation is:axÂ² + bx + c = 0The given equation is:xÂ² + 20 = 2xwhich can be rewritten as:xÂ² – 2x + 20 = 0By comparison:a = 1b = -2c = 20The quadratic formula used to get the roots is shown in the attached imageWe now substitute to get the roots as follows:x = or x = Hope this helps ðŸ™‚

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