For this case we have the following:
a) [tex]\frac{60}{-3}[/tex]
We look for a number that multiplied by the denominator, resulting in the numerator. When multiplying [tex](-20) * (3) = 60[/tex], we get the numerator. Thus, the result is[tex]\frac{60}{- 3} = - 20[/tex]
b) [tex]6 - (- 3)[/tex]
The law of signs states that:
+ * + = +
+ * - = -
- * + = -
- * - = +
According to the fourth case we have to:
[tex]6 - (- 3) = 6 + 3 = 9[/tex]
c)[tex](- 5) ^ 2 = (- 5) (- 5) = 25[/tex]
For this case we apply the fourth case of the law of signs mentioned above. By power properties:
[tex](a) ^ 2 = (a) (a)[/tex]
Answer:
Part a: -20
Part b: 9
Part c: 25
