Rewrite Equation: Rewrite the given equation in the standard form for a quadratic equation.The given equation is x2−x=1. To solve for x, we need to rewrite the equation in the standard form of a quadratic equation, which is ax2+bx+c=0. We can do this by subtracting 1 from both sides of the equation.x2−x−1=0
Use Quadratic Formula: Use the quadratic formula to find the solutions for x. The quadratic formula is x=2a−b±b2−4ac, where a, b, and c are the coefficients from the standard form of the quadratic equation ax2+bx+c=0. In our case, a=1, b=−1, and c=−1.
Calculate Discriminant: Calculate the discriminant b2−4ac. The discriminant is the part of the quadratic formula under the square root, which determines the nature of the roots. For our equation, the discriminant is: (−1)2−4(1)(−1)=1+4=5
Apply Discriminant: Apply the discriminant to the quadratic formula.Now that we have the discriminant, we can find the solutions for x using the quadratic formula:x=2×1−(−1)±5x=21±5
Simplify Solutions: Simplify the solutions for x. We have two solutions based on the ± sign in the quadratic formula: x=21+5 and x=21−5 These are the two solutions to the equation x2−x=1.
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