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Ilya [14]
3 years ago
13

I need help. thanks? lolz.

Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0
The answer is the second one aka 6
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What are the solutions of the equation x^4 – 5x^2 – 36 = 0? Use factoring to solve.
hammer [34]

Answer:

Step-by-step explanation:

The equation is x^4 – 5x^2 – 36 = 0

We will break the middle term:

Firstly multiply the coefficient of x^4 by constant term of the equation:

1*36 = 36

Now find any two numbers whose product is 36 and their sum or difference is equal to 5

9*4 = 36

9-4 = 5

Now,

x^4 – 5x^2 – 36 = 0

x^4-9x^2+4x^2-36=0

Now take the common:

x^2(x^2-9)+4(x^2-9)=0

(x^2+4)(x^2-9)=0

x²+4=0,

x²= 0-4,

x²=-4,  

Take root on both sides:

√x²=+/-√-4

+/-√-4 = +/-√-1 *√4

√-1 = i

Then +/-√-1 *√4 = √4 i

We know that the root of 4 is 2

Then we can write it as +/-2i

Thus x = 2i , -2i

Now (x^2-9)= 0

x²=0+9

x²=9

Take square root on both sides:

√x²=√9

x=+/-3

x= 3, -3

Therefore the values of x are 2i, -2i, 3 , -3 ....

3 0
3 years ago
(HELP ASAP!!)
7nadin3 [17]

Answer:

1500

Step-by-step explanation:

24 month means 2 years ( N )

rate 15 pcpa ( R )

amount is 5000 ( P )

so by formula

interest = P×N×R/100

so ( I ) = 5000×2×15/100

so( I ) = 50×2×15 ....... ( here 100 ( 2 zero ) and 5000.( 2 zero ) got canceled

so ( I ) = 50×2×15

so ( I ) = 100×15

so ( I ) = 1500

MARK AS BRAINLIST IF IT IS USEFUL

3 0
3 years ago
Sorry for the wait plz help !!!!!!!
harkovskaia [24]

Answer:

it should be 2 units

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A pair of shoes is on sail for 30% off. The original price is p. Which expression can be used to find the price of the shoes aft
Vladimir79 [104]

Answer:


Step-by-step explanation:

.30 x p = ___

p - ___ = price of shoes after the discount

5 0
3 years ago
Find the length of side a.
coldgirl [10]
The length of side A is 194
6 0
2 years ago
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