Construire les pounts \( A^{\prime}, B^{\prime}, C^{\prime}, D^{\prime}, E^{\prime} \), et \( ]^{\prime} \) Moutrer que \( I^{\prime} \operatorname{est} \) \& milien des segments \( \left[A^{\prime} D \mid\right] \) et \( \left[E^{\prime} C\right. \)

Vuelve a escribir la ecuación completando el cuadrado. \( x^{2}+3 x-28=0 \)

The perimeter of a circle is called the CIRCUMFERENCE. Circumference of a circle is given by the formula \( \mathrm{C}=2 \pi \mathrm{r} \) Where \( \pi=22 / 7 \) or 3.14 \( \mathrm{r}= \) The length from the midpoint(center) of the circle to the edge (side) Solve the formula for r and use it to answer the following question: If the Circumference of a circle is 31.4 centimeters (cm.) and you know that \( \pi=3.14 \), find the length of the radius of the circle ( r )?

8. Observe the figures below.

2. \( \tan (\theta)+\cot (\theta) \equiv \sec (\theta) \cdot \csc (\theta) \)

24 Consider the equation of the second degree in \( x: x^{2}-(m+3) x+m=0 \), where \( m \) is a real parameter. Show that there is between the roots, when they exist, an independent relation from \( m \). (Eliminate \( m \) between \( S \) and \( P) \).