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jeka57 [31]
3 years ago
5

X² +10x+3=0how do I slove it with the quadratic formula?​

Mathematics
2 answers:
puteri [66]3 years ago
7 0

Answer:

Step-by-step explanation:

Naddik [55]3 years ago
4 0

The equation is already in standard form [ ax² + bx + c = y ] so we can find the values of each variable.

a = 1

b = 10

c = 3

y = 0

Quadratic formula: x = \frac{-b+-\sqrt{b^2-4ac} }{2a}

Solve using the formula:

x=\frac{-10+-\sqrt{10^2-4(1)(3)} }{2(1)}

x=\frac{-10+-\sqrt{100 - 12} }{2}

x=\frac{-10+-\sqrt{88} }{2}

x=-5+-\sqrt{22}

Therefore, the answer is [ x = -5 ± √22 ]

Best of Luck!

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Answer:

A. 60 degrees

Step-by-step explanation:

Solution to sin(x/2)=(\sqrt{3}/2)

By looking at this equation, I can identify that the answer must be within the first quadrant since the numerator and denominator are both positive.

Since it is in the first quadrant, the range of the value of the answer must be between 0 degrees less than or equal to x less than or equal to 90 degrees.

I can also identify that this is a 30, 60, 90 degree triangle because it has a \sqrt{3} and 2 as the numerator and denominator; in this case this tells us that we are dealing with a 30, 60, 90 degree triangle because that is the only triangle with those 2 respective sides.

Once identifying those two pieces of information, we can then determine the answer.

Since sin is equal Opposite/Hypotenuse, we can then substitute the sides of the triangle (\sqrt{3}, 2) to find the angle (unknown).

So the equation would look like this,

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We can then conclude that 60 degrees is the unknown angle, due to the nature of a 30 60 90 degree triangle.

*Use the attachment for reference

Therefore, the answer, 60 degrees, is a solution to the equation "sin(x/2)=(\sqrt{3}/2)"

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