Найди значение выражения \( a+\frac{3 d-a^{2}}{a} \) при \( a=-4 \) и \( d=78 \)

Lös ekvationerna. Skriv på samma sätt som i uppgif \( \begin{array}{ll}118 \text { a) } 3(3 x+4)=39 & \text { b) } 7+4(x-5)=3 \\ 119 \text { a) } 2(9+2 x)=26 & \text { b) } 13+6(x-4)=7\end{array} \)

) \( x^{2} y^{2}-16 \)

(1) \( (x+2) \times(y+3) \)

Priya has a recipe for banana bread. She uses \( 7 \frac{1}{2} \) cups of flour to make 3 loaves of banana bread. Andre will follow the same recipe. He will make \( b \) loaves of banana bread using \( f \) cups of flour. Which of these equations represents the relationship between \( b \) and \( f \) ?

2. Resuelve las siguientes operaciones: a. \( 2 \cdot \sqrt{4 \cdot x^{2} \cdot y}+5 \cdot \sqrt{16 \cdot y^{2}}-21 \cdot x \cdot \sqrt{36 \cdot y^{2}} \)