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Shkiper50 [21]
3 years ago
11

Simplify the expression to a + bi form: (2 – i) – (-4+8i)

Mathematics
2 answers:
Ne4ueva [31]3 years ago
8 0

Answer:

6-9i

Step-by-step explanation:

(2-i)-(-4+8i)

2-i+4-8i

2+4-i-8i

6-i-8i

6-9i

If you're satisfied with the answer, then please mark me as Brainliest.

ser-zykov [4K]3 years ago
5 0

Answer:

→(2 - i) - ( - 4 + 8i) \\  = 2 - i + 4 - 8i \\  = 2 + 4 - i - 8i \\  =  \boxed{6 - 9i}✓

  • <u>6 - 9i</u> is the right answer.
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AB= 4x + 7 and BC = 20x - 5 <br> AB ~= BC
Mariana [72]

The value of the variable x is 3/4

<h3>What are congruent segments</h3>

Congruent segment are segments with equal or congruent lengths.

From the information given, we have that line AB is approximately equal to line BC. This is represented as;

AB = BC

Where;

  • AB = 4x + 7
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Now, let's equate the expressions

4x + 7 = 20x - 5

collect like terms

4x - 20x = - 5 - 7

- 16x = - 12

Make 'x' the subject of formula

x = -12/-16

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Thus, the value of the variable x is 3/4

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brainly.com/question/1388250

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