Using quadratic formula 2x2−2x+2=0

Mathematics

ScanSolve AI Answer

Answer

x=1±3i2x = \frac{1 \pm \sqrt{3}i}{2}

Step-by-step solution

6 steps
  1. Identify the coefficients aa, bb, and cc from the given quadratic equation 2x2−2x+2=02x^2 - 2x + 2 = 0.

    a=2a = 2 b=−2b = -2 c=2c = 2
  2. Write down the quadratic formula.

    x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
  3. Substitute the values of aa, bb, and cc into the quadratic formula.

    x=−(−2)±(−2)2−4(2)(2)2(2)x = \frac{-(-2) \pm \sqrt{(-2)^2 - 4(2)(2)}}{2(2)}
  4. Simplify the expression.

    x=2±4−164x = \frac{2 \pm \sqrt{4 - 16}}{4} x=2±−124x = \frac{2 \pm \sqrt{-12}}{4}
  5. Simplify the square root of the negative number.

    Recall that −1=i\sqrt{-1} = i.

    x=2±12i4x = \frac{2 \pm \sqrt{12}i}{4} x=2±4×3i4x = \frac{2 \pm \sqrt{4 \times 3}i}{4} x=2±23i4x = \frac{2 \pm 2\sqrt{3}i}{4}
  6. Divide all terms by the common factor of 2.

    x=2(1±3i)4x = \frac{2(1 \pm \sqrt{3}i)}{4} x=1±3i2x = \frac{1 \pm \sqrt{3}i}{2}

    The solutions are:

    x1=1+3i2x_1 = \frac{1 + \sqrt{3}i}{2} x2=1−3i2x_2 = \frac{1 - \sqrt{3}i}{2}
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