Show how it is possible for nobody to win. (Show all possibilities)

2) \( \frac{a b-b^{2}}{a^{2}+b^{2}} \cdot\left(\frac{a}{a+b}+\frac{b}{a-b}\right) \)

Compute the integral of \( f(x, y, z)=11 y^{2} \) over the region within the cylinder \( x^{2}+y^{2}=4 \), where \( 0 \leq z \leq y \). https://www.geogebra.org/m/xttjezvc (Give an exact answer. Use symbolic notation and fractions where needed.)

10 -misol \( 25786 \cdot 37+24:(45980+1289 \circ+(45) \) \( 793-23451) \cdot 24 \)

For the polynomials \( P(x)=2 x-3, Q(x)=x^{2}+4 x-3 \) and \( R(x)=x^{2}+2 x^{2}-4 x+6 \) find \( R(x)=Q(x) \)

Q4. \( \triangle P Q R \) is a right-angled triangle with \( \angle P R Q=90^{\circ}, Q R=12 \mathrm{~cm}, P Q=15 \mathrm{~cm} \) and \( R S=5 \mathrm{~cm} \). (a) Find the length of \( P S \). (b) Calculate \( \angle P Q S \).