If p and q are the roots of X^2 2x 1=0 then the value of p^3 q^3 becom...
Solution:
To find the value of p^3 * q^3, we need to first find the values of p and q.
The given equation is X^2 + 2X + 1 = 0.
We can solve this quadratic equation by factoring or by using the quadratic formula.
Factoring:
The equation can be factored as (X + 1)(X + 1) = 0.
So, the roots of the equation are X = -1 and X = -1.
Quadratic formula:
Using the quadratic formula, X = (-b ± √(b^2 - 4ac)) / 2a, where a, b, and c are the coefficients of the quadratic equation.
In this case, a = 1, b = 2, and c = 1.
Using the quadratic formula, we get X = (-2 ± √(2^2 - 4*1*1)) / 2*1.
Simplifying this, we get X = (-2 ± √(4 - 4)) / 2.
X = (-2 ± √0) / 2.
Since the discriminant is zero, the roots are equal.
So, X = -1 and X = -1.
Calculating p^3 * q^3:
Now that we know the values of p and q, which are -1 and -1, respectively, we can calculate p^3 * q^3.
p^3 * q^3 = (-1)^3 * (-1)^3.
Simplifying this, we get -1 * -1 * -1 * -1.
Multiplying these values, we get 1.
Therefore, the value of p^3 * q^3 is 1.
Summary:
The roots of the given quadratic equation X^2 + 2X + 1 = 0 are -1 and -1. Therefore, the value of p^3 * q^3 is 1.
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