For this case we must resolve the following expression:
[tex](-6) ^ 2- \frac {28} {4} + (- 9) =[/tex]
Simplifying keeping in mind that:
[tex]- * - = +\\+ * - = -[/tex]
[tex]36- \frac {28} {4} -9 =[/tex]
Simplifying keeping in mind that: [tex]\frac {28} {4} = 7[/tex]
[tex]36-7-9 =[/tex]
Simplifying keeping in mind that:
Equal signs are added and the same sign is placed:
[tex]36-16 =[/tex]
Simplifying keeping in mind that:
Different signs are subtracted and the sign of the major is placed:
[tex]36-16 = 20[/tex]
Answer:
Option C
