Find the roots of x² − 5x + 6 = 0 using the quadratic formula. Show all steps and write the final answer with the math in LaTeX.

Mathematics

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Answer

The roots of the equation x2−5x+6=0x^2 - 5x + 6 = 0 are x=2x=2 and x=3x=3.

Step-by-step solution

5 steps

Steps:

  1. Identify the coefficients

    For a quadratic equation in the form ax2+bx+c=0ax^2 + bx + c = 0, we have:
    a=1a = 1
    b=−5b = -5
    c=6c = 6

  2. Write the quadratic formula

    The quadratic formula is given by:
    x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

  3. Substitute the values into the formula

    x=−(−5)±(−5)2−4(1)(6)2(1)x = \frac{-(-5) \pm \sqrt{(-5)^2 - 4(1)(6)}}{2(1)}

  4. Simplify the expression

    x=5±25−242x = \frac{5 \pm \sqrt{25 - 24}}{2}
    x=5±12x = \frac{5 \pm \sqrt{1}}{2}
    x=5±12x = \frac{5 \pm 1}{2}

  5. Calculate the two roots

    For the positive sign:
    x1=5+12=62=3x_1 = \frac{5 + 1}{2} = \frac{6}{2} = 3

    For the negative sign:
    x2=5−12=42=2x_2 = \frac{5 - 1}{2} = \frac{4}{2} = 2

    The roots of the equation x2−5x+6=0x^2 - 5x + 6 = 0 are x=2x=2 and x=3x=3.

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