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Cerrena [4.2K]
3 years ago
10

Find the value of k for which the quadratic equation 4x2+kx+3=0 has equal roots.​

Mathematics
1 answer:
charle [14.2K]3 years ago
4 0

Answer:

k = +/-√48

Step-by-step explanation:

4x^2 + kx + 3 = 0

For equal (duplicate) roots the discriminant = 0, so

k^2 - 4*4*3 = 0

k^2 - 48 = 0

k^2 = 48

k = +/-√48

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When two polynomials are subtracted the difference is -4x^2-7x+9. If one of the polynomials is x^2-4x+2, then determine the two
algol [13]

Answer:

The two options are:

-3x² - 11x + 11 and 5x² + 3x - 7

Step-by-step explanation:

When two polynomials are subtracted the difference is

-4x² - 7x + 9

One of the polynomials is

x² - 4x + 2

To get the second polynomial, we an either add x² - 4x + 2 to -4x² - 7x + 9 or subtract -4x² - 7x + 9 from x² - 4x + 2

First Option:

(x² - 4x + 2) + (-4x² - 7x + 9)

= x² - 4x + 2 - 4x² - 7x + 9

= x² - 4x² - 4x - 7x + 2 + 9

= -3x² - 11x + 11

Secons Option:

(x² - 4x + 2) - (-4x² - 7x + 9)

= x² - 4x + 2 + 4x² + 7x - 9

= x² + 4x² - 4x + 7x + 2 - 9

= 5x² + 3x - 7

Therefore, the two options are:

-3x² - 11x + 11 and 5x² + 3x - 7

7 0
3 years ago
Which expression are equivalent to the expression 4a-6b+3c
jeka94
<span>here the Answer: -3a-4b+8c. 

</span>
5 0
2 years ago
2. 3h – 10 = 35<br> 44<br> d
Doss [256]

Step-by-step explanation:

3h - 10 = 35 ➡ 3h = 35 + 10 ➡ 3h = 45 ➡h = 15

8 0
3 years ago
Read 2 more answers
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Rachel will have about $3.53 in change---------
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PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
larisa86 [58]

Answer: (C) divide by 1

<u>Step-by-step explanation:</u>

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x - 1 = 0   ⇒   x = 1

so the number outside of the synthetic division symbol is 1.


4 0
3 years ago
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