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Lina20 [59]
2 years ago
10

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Mathematics
2 answers:
solong [7]2 years ago
8 0

Answer:

y^2+49=(y-7i)(y+7i)

Step-by-step explanation:

Given : Expression y^2+49

To find : Factor the expression over the complex numbers ?

Solution :

To factor the expression we equate it to zero and find the values of y,

y^2+49=0

Subtract 49 both side,

y^2=-49

Taking root both side,

y=\sqrt{-49}

We know, \sqrt{-1}=i,\ \sqrt{49}=7

y=\pm 7i

The factors are (y-7i)(y+7i)

Therefore, y^2+49=(y-7i)(y+7i)

ElenaW [278]2 years ago
3 0

Use\\\\a^2-b^2=(a-b)(a+b)\\\\i=\sqrt{-1}\to i^2=-1\\\\y^2+49=y^2+7^2=y^2-(-1)(7^2)=y^2-(7i)^2\\\\=(y-7i)(y+7i)

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max2010maxim [7]

Answer:

4x+20=

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Step-by-step explanation:

Simplifying: 4x + 20 = 6x + -10

Reorder the terms: 20 + 4x = 6x + -10

Reorder the terms: 20 + 4x = -10 + 6x

Solving: 20 + 4x = -10 + 6x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6x' to each side of the equation: 20 + 4x + -6x = -10 + 6x + -6x

Combine like terms: 4x + -6x = -2x: 20 + -2x = -10 + 6x + -6x

Combine like terms: 6x + -6x = 0: 20 + -2x = -10 + 0: 20 + -2x = -10

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Combine like terms: -10 + -20 = -30: -2x = -30

Divide each side by '-2': x = 15

Simplifying: x = 15

4 0
3 years ago
Solve the equation by tranposing method<br> 3(y-1)=6
AlekseyPX
If I’m correct the answer is
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7 0
3 years ago
Can anyone answer this for me?
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The answer to problem #2 is,

( x , y ) ==> ( - x , - y )

All of them were rotated 180° clockwise which is the same as 180° counterclockwise.

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey
5 0
2 years ago
4 thousands + 21 tens
mafiozo [28]
4 x 1 thousand (1000) = 4000

21 x 1 ten (10) = 210


 4000
+ 210
---------
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=4210 (four thousand-two hundred and ten
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