Answer:
1. D
2. A
Step-by-step explanation:
Q1. Kerry is simplifying
By the definition of negative powers,
Hence,
So, the first step in simplifying the expression is
Q2. Given the expression
First, use the definition of negative powers:
Thus,
Answer:
$2
Step-by-step explanation:
4 - 2 = 2
77.) x= {-5, 6}
78.) x= {-4, 9}
79.) x= {5/3, 2}
80.) x= {1/9, 3}
81.) x= {-6, 18}
82.) x= {-3√3 +4, 3√3 +4}
83.) x= {-7, -3}
84.) x= {-√85 +9 /2, √85 -9 /2}
The graph crosses the x axis 3 times so there are 3 roots.
B