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Dafna1 [17]
2 years ago
13

What's (6+5i)(6-5i) using the foil method

Mathematics
1 answer:
I am Lyosha [343]2 years ago
8 0

Answer:

Step-by-step explanation:

Remember:\\(a+b)(a-b)=a^2-b^2\\\\(6+5i)(6-5i)=6^2-(5i)^2=36-(-1)*25=36+25=61\\

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The Jacksons went on a 700 mile trip. On the first day they drove 6 and 2/3 hours and on the second day the drove 5 and 3/4 hour
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Answer:

Step-by-step explanation:

Total number of miles is 700.

On the first day, they drove 6 and 2/3 hours. We would convert 6 and 2/3 hours to improper fraction. It becomes 20/3 hours. On the second day, they drove 5 and 3/4 hours. Converting to improper fraction, it becomes 23/4 hours. Total number of hours that they drove during the first two days is the sum of hours driven on the first day and hours driven on the Second day. It becomes

20/3 + 23/4 = (80 + 69)/12

= 149/12 hours

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3 years ago
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3 years ago
36 + 120 : 12-63<br> What's this answer?
NeTakaya

Answer:

Step-by-step explanation:

36 + 120: 12-63

156 :  51

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