Hund's Rules declare that single electrons in different half-filled orbitals within the same subshell of an atom will each have the same spin. True False

38. \( x^{2}-4 x+12=0 \)

Ejercicio z: Dilatación de un cuadrado con facior Problema: Diata el cuadrado con vérices \( A(2,2) \), \( B(4,2), C(4,4) \), y \( D(2,4) \) usando un factor de escala k=3 respecto al origen.

Triángulo \( A_{5}=(b \times q) \div \) \( 2=\ldots \mathrm{m}^{2} \)

The sum of two numbers is 67 . The difference of the two numbers is 13. What are the two numbers. Let \( x \) be the larger number and \( y \) be the smaller number. Write an equation that expresses the information in the sentence "The sum of two numbers is 67 ."

What is the solution of the equation \( -x^{2}-2 x-4=0 \) \( \begin{array}{l}x=1 \pm \sqrt{3} \\ x=1 \pm i \sqrt{3} \\ x=-1 \pm i \sqrt{3} \\ x=-1 \pm \sqrt{3}\end{array} \)