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Elena L [17]
2 years ago
11

Solve the following equation by completing the square. 1/4x^2+x+1/4=0

Mathematics
1 answer:
fenix001 [56]2 years ago
8 0

Answer:

D. X=-2+sqrt(3) or -2-sqrt(3)

x_{1} =-2+\sqrt{3} \\x_{2} =-2-\sqrt{3}

Step-by-step explanation:

Quadratic Equation given:

$\frac{1}{4} x^2+x+\frac{1}{4}=0$

In order to get rid of the fractions, multiply both sides by 4.

$\frac{1}{4}x^2\cdot \:4+x\cdot \:4+\frac{1}{4}\cdot \:4=0\cdot \:4$

We get:

x^2+4x+1=0

x^2+4x+4-4+1=0

Completing the square:

(x+2)^2-4+1=0\\

(x+2)^2-3=0

(x+2)^2=3

x+2=\pm\sqrt{3}

x=-2\pm\sqrt{3}

x_{1} =-2+\sqrt{3} \\x_{2} =-2-\sqrt{3}

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Answer:

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5 0
2 years ago
A rectangular prism has a base with a length of 25, a width of 9, and a height of 12. A second prism has a square base with a si
RSB [31]

Answer:

The height of the second prism is 12 units.

Step-by-step explanation:

First, we must know that the volume of a rectangular prism is equal to length x width x height. With this information, we can multiply the given dimensions of the first rectangular prism to get a volume of 2700 cubic units. From here, we must understand wha we need from the second rectangular prism. Because it has a square base of 15, that accounts for both its width and length. Therefore, we have that

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6 0
2 years ago
For f(x) = 2x – 3 find f(-1/4)
Firdavs [7]

9514 1404 393

Answer:

  -3 1/2

Step-by-step explanation:

Put the argument where the variable is and do the arithmetic.

  f(-1/4) = 2(-1/4) -3 = -1/2 -3

  f(-1/4) = -(3 1/2)

5 0
3 years ago
Write the expression<br> a2b3c2d in expanded<br> form.
Zanzabum

Answer:

a*2+b*2+c*2+d

Step-by-step explanation:

If i's meant to be Pythagorean theorem, a*a+b*b=c*c

8 0
3 years ago
Urrrrrrrrrrrrrrerrrrrr
Alenkasestr [34]

Answer:

answer = -12

Step-by-step explanation:

substitute y as -3 and z as 4

3(-3) - 2(4) + 5

-9-8+5

-17+5

-12

5 0
2 years ago
Read 2 more answers
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