If alpha and beta are the roots of x square is equal to x minus 1 then...
Given: The equation is x^2 = x - 1.
To Find: The value of (α^2/β) - (β^2/α).
Explanation:
Let's solve the given equation:
x^2 = x - 1
Rearranging the equation, we get:
x^2 - x + 1 = 0
We can solve this quadratic equation using the quadratic formula:
x = (-b ± √(b^2 - 4ac)) / 2a
In this case, a = 1, b = -1, and c = 1.
Substituting the values, we get:
x = (-(-1) ± √((-1)^2 - 4(1)(1))) / (2(1))
x = (1 ± √(1 - 4)) / 2
x = (1 ± √(-3)) / 2
Since the square root of a negative number is not a real number, we can conclude that the given equation has no real roots.
However, we can find the complex roots of the equation.
Complex Roots:
The complex roots of a quadratic equation can be written in the form α = p + qi and β = p - qi, where p and q are real numbers and i is the imaginary unit (√(-1)).
In this case, since the equation has no real roots, both α and β will be complex numbers.
Using Vieta's Formulas:
Vieta's formulas state that for a quadratic equation ax^2 + bx + c = 0 with roots α and β, the sum of the roots is α + β = -b/a and the product of the roots is αβ = c/a.
In this case, a = 1, b = -1, and c = 1.
Using the sum of roots formula, we get:
α + β = -(-1)/1
α + β = 1
Using the product of roots formula, we get:
αβ = 1/1
αβ = 1
Therefore, the sum of the roots α and β is 1 and the product of the roots is 1.
Calculating α^2/β and β^2/α:
To find the value of (α^2/β) - (β^2/α), we need to calculate α^2/β and β^2/α separately.
α^2/β = (α/β) * α = α(α/β) = α^2 * (1/β) = α^2/β
Similarly, β^2/α = β(β/α) = β^2 * (1/α) = β^2/α
Therefore, (α^2/β) - (β^2/α) = α^2/β - β^2/α
Substituting the Values:
Since we know that α + β = 1 and αβ = 1, we can substitute these values into the expression (α^2/β) - (β^2/α).
Using the identity (a + b)^2 = a^2 + b^2 + 2
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