(5ab-7a-9) - (8ab-2)
5ab - 7a - 9 - 8ab + 2
-3ab -7a -7
Step-by-step explanation:
Find angle W first:
37 + 93 + W = 180 ---> W = 50°
Use sine law to find the length w:
w/(sin 50) = 31/(sin 37)
w = 31(sin 50/sin 37)
= 39.5
The numbers are complex numbers, and the sum of the complex numbers (-4 +i) and (10 - 5i) is 6 - 4i
<h3>How to evaluate the sum?</h3>
The expressions are given as:
(-4 +i) and (10 - 5i)
The sum is represented as:
Sum = (-4 +i) + (10 - 5i)
Open the brackets
Sum = -4 +i + 10 - 5i
Collect like terms
Sum = -4 + 10 +i - 5i
Evaluate the like terms
Sum = 6 - 4i
Hence, the sum of the complex numbers (-4 +i) and (10 - 5i) is 6 - 4i
Read more about complex numbers at:
brainly.com/question/10662770
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