Question Details and Solutions
This page provides detailed solutions for the first four questions of the exam.
Question 1 focuses on determining the Definitionsmenge Wurzeln definitionsetforroots. The solutions show that for √7x−1, the definition set is x ≥ 1/7, while for √−4x−6, it's x ≤ -1.5.
Question 2 involves simplifying root expressions and rationalizing denominators. Notable solutions include:
- √225x² simplified to 15√x²
- √7p² √49p² √7p simplified to 14p√p
Example: For rationalizing the denominator of 3/√6−√2, the solution multiplies both numerator and denominator by √6+√2, resulting in 3√6+√2/6−2 = 3√6+√2/4.
Question 3 requires students to identify a quadratic equation from a graph, with the solution given as x² + 0.5x - 2 = 0.
Question 4 involves solving a quadratic equation using the completing the square method. The equation 2x² - 4.8x + 0.88 = 0 is solved step-by-step, resulting in solutions x = 0.2 and x = 2.2.