Find the equation whose sum of root and product of root is 2 and 3

Biology

ScanSolve AI Answer

Answer

x2−2x+3=0x^2 - 2x + 3 = 0

Step-by-step solution

4 steps

Let the roots of the quadratic equation be α\alpha and β\beta.

  1. Write down the relationships between the roots and the coefficients of a quadratic equation.

    For a quadratic equation of the form ax2+bx+c=0ax^2 + bx + c = 0, the sum of the roots is α+β=−ba\alpha + \beta = -\frac{b}{a} and the product of the roots is αβ=ca\alpha \beta = \frac{c}{a}.
    We can also consider a monic quadratic equation (where a=1a=1), which is x2−(α+β)x+αβ=0x^2 - (\alpha + \beta)x + \alpha \beta = 0.

  2. Use the given information to find the sum and product of the roots.

    The problem states that the sum of the roots is 2, so α+β=2\alpha + \beta = 2.
    The problem states that the product of the roots is 3, so αβ=3\alpha \beta = 3.

  3. Substitute these values into the monic quadratic equation formula.

    Using the formula x2−(α+β)x+αβ=0x^2 - (\alpha + \beta)x + \alpha \beta = 0, we substitute the values from Step 2.
    x2−(2)x+3=0x^2 - (2)x + 3 = 0

  4. Write the final equation.

    The equation is x2−2x+3=0x^2 - 2x + 3 = 0.

    x2−2x+3=0x^2 - 2x + 3 = 0

    x^2 - 2x + 3 = 0

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