8:2 can be simplified to 4:1. (:
The simplified expression of (7 + 9i)(8 - 10i) is 146 + 2i
<h3>How to simplify the expression?</h3>
The expression is given as:
(7 + 9i)(8 - 10i)
Expand the bracket
7 * 8 + 9i * 8 -7 * 10i - 9i * 10i
Evaluate the products
56 + 72i -70i - 90(i²)
Evaluate the difference
56 + 2i - 90(i²)
In complex numbers;
i² = -1
So, we have:
56 + 2i - 90(-1)
Evaluate
56 + 2i + 90
Add the like terms
146 + 2i
Hence, the simplified expression of (7 + 9i)(8 - 10i) is 146 + 2i
Read more about complex numbers at:
brainly.com/question/10662770
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Answer:
-6+-10=-16
Step-by-step explanation:
+ - = -
........
Answer:
121 and 1331
Step-by-step explanation:
Because 11x11=121 and 11x11x11=1331
9514 1404 393
Answer:
irrational numbers
Step-by-step explanation:
The real numbers whose decimals do not end and do not repeat are irrational numbers.
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If a decimal number ends or repeats, it can be represented by the <em>ratio</em> of two integers. That is the essence of a <em>ratio</em>nal number.
