Answer:
d. c = 100; (x – 10)²
Step-by-step explanation:
Note that (x+a)²=x²+2ax+a².
In our case, 2a=-20, so 'a' must be -10.
Since c=a², and a=-10, c=(-10²)=100.
Since a=-10, the perfect square is (x – 10)²
Answer: 789.39
Step-by-step explanation: Just subtract 89.51 from 878.9.
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the answer is 8
Step-by-step explanation:
4 + 4=8
double the number
