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oee [108]
3 years ago
7

Find all solutions to the equation equation (x - 1)^2 = -4.

Mathematics
1 answer:
tatuchka [14]3 years ago
6 0

Answer:

x = 1±2i

Step-by-step explanation:

(x - 1)^2 = -4.

Take the square root of each side

sqrt( (x - 1)^2) = sqrt(-4)

Sqrt(ab) = sqrt(a)sqrt(b)

We know the sqrt(4) = 2 and the sqrt(-1) = ±i

x-1 = ±2i

Add 1 to each side

x-1+1 = 1±2i

x = 1±2i

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50 points! Expert verified please help me ! Random answers will be reported
Vikentia [17]

Answer:

(1,-2)

Step-by-step explanation:

(x,y)transforms(y,-x)at about 270°.

3 0
2 years ago
Question 4
laiz [17]

Answer:

I just solved a question similar to this

Let's understand it

It's saying she got 660 or it is that her weekly pay is 660

So now let weekly pay which is P be 660

Hence the formulae is given

It's 480 + 18 (h – 30) = 660

Now its just boring calculation

If you mark it brainleist I will do the calculation for you wink wink

Never mind

480 + 18 (h – 30) = 660

18 (h – 30) = 660-480

18 (h – 30) = 120

(h – 30) = 120/18

(h – 30) = 6.6

h = 6.6+30

h= 36.6

So dam the Judy lady worked for 36.6 hours

5 0
2 years ago
What is the result when 4x3 + 19x2 + 29x + 14 is divided by 4x + 7?
Sergio039 [100]

Step-by-step explanation:

4x³ + 19x² + 29x + 14

= (4x³ + 7x²) + (12x² + 21x) + (8x + 14)

= x²(4x + 7) + 3x(4x + 7) + 2(4x + 7).

= (x² + 3x + 2)(4x + 7).

Hence 4x³ + 19x² + 29x + 14 divided by 4x + 7 is x² + 3x + 2 or (x + 1)(x + 2).

3 0
2 years ago
Read 2 more answers
Fill in the blank‘s to complete the equation that describes the diagram
Harman [31]
-4 + -10 = -14
Negative 4 plus negative 10 = negative 14 (thats what I think the answers gonna be, but im not that sure though)
5 0
3 years ago
Identify the 10th term of a geometric sequence 2,8,32
ElenaW [278]

Answer:

Step-by-step explanation:

Givens

a = 2

r = 4

n = 10

tn = ??

Formula

tn = ar^(n - 1)

Solution

t_10 = 2 * 4^(10 - 1)

t_10 = 2 * 4^9

t_10 = 524288

5 0
3 years ago
Read 2 more answers
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