Question

The two roots of 8-kx - 2x² =0
will be equal in magnitude but opposite in sign if the value of k​

Answer 1

Answer:QUESTION :

Find the value of k for which the roots of the quadratic equation 2x2+kx+8=0, will have equal value.

SOLUTION :

According to the above question, the roots have equal and real value.

This is possible when D = 0

So we can thereby state that :

D = 0

=> D ^2 = 0

=> B^2 - 4 AC = 0

=> B^2 = 4 AC

Quadratic Equation : 2x2+kx+8=0

So,

A = 2

B = K

C = 8

B^2 = K ^2

4AC = 64

Now :

K ^2 = 64

=> K = 8 or - 8.

So, for the two values of K, 8 and - 8, the roots of the above quadratic equation, will have equal value...

Step-by-step explanation:

Answer 2

Answer:

here's ur answer dude

Step-by-step explanation:

Percent means divide by one-hundred.

Just remove the “%” symbol, draw a line under it, and write “100” under the line:

412100

If you don’t like mixed-fractions within your fraction, just change “ 4+12" to "4.5"

If you want to remove the decimal points, to get a rational number with integers on top and bottom, just slide the decimal points to the right, as far as you can (inserting zeroes when you need to):

412100=

4.5100.=

45.1000.=

451000=

Finally, to simplify the fraction, divide both top and bottom by any common factor. What are the common factors of 45 and 1000? (Usually, it’s easier to ask which primes are NOT a common factor!)

2 is not a factor of 45, so try 3.

3 is not a factor of 1000, so try 5.

5 is a factor of both, so divide by 5:

451000=

45/51000/5=

15200

5 is a factor of both 15 and 200, so do that again!

15/5200/5=

340

Since 3 is a prime, STOP.

hope it helps