3 years ago

Raíz cuadrada de 19384

Mathematics

1 answer:

miss Akunina [59]3 years ago

6 0

Answer:

WHat does that mean?/

Step-by-step explanation:

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Find all the zeros of 2x4+x3-14x2-19x-6 two of its zeros are -2 and -1

GalinKa [24]

Answer:

$-2,\ -1,\ -\dfrac{1}{2},\ 3.$

Step-by-step explanation:

Consider polynomial $2x^4+x^3-14x^2-19x-6.$

If x=-2 is its zero, then you can divide the polynomial $2x^4+x^3-14x^2-19x-6$ by $x+2$ and get

$2x^4+x^3-14x^2-19x-6=(x+2)(2x^3-3x^2-8x-3).$

If x=-1, then the polynomial $2x^4+x^3-14x^2-19x-6$ can be rewritten as

$2x^4+x^3-14x^2-19x-6=(x+2)(x+1)(2x^2-5x-3).$

The quadratic polynomial has roots

$x_{1,2}=\dfrac{-(-5)\pm\sqrt{(-5)^2-4\cdot2\cdot(-3)}}{2\cdot 2}=\dfrac{5\pm \sqrt{25+24}}{4}=\dfrac{5\pm \sqrt{49}}{4}=3,-\dfrac{1}{2}.$

Then the polynomial $2x^4+x^3-14x^2-19x-6$ has zeros $-2,\ -1,\ -\dfrac{1}{2},\ 3.$

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3 years ago

Help, please<br> Simplify. √27x^2y^2

skelet666 [1.2K]

Answer:

3✓3xy

✓3^2×3x^2y^2

✓3xy ✓3

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3 years ago

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Pls helpp 3/4 + 4/5 - 7/10 =?

Margarita [4]

Answer:

3/4=0.75

4/5=0.8

7/10=0.7

0.75+0.8=1.55

1.55-0.7=0.85

Step-by-step explanation:

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2 years ago

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A standard box of tissues has a base area of 27 square inches, and a height of 5 inches. If the length and width of the tissue b

kodGreya [7K]

Step-by-step explanation:

27×5=135+27×2=54 135+54=

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3 years ago

Please help me I'll give brainliest

Olenka [21]

Hey, there isn't a question, but I'd love to help!

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3 years ago

Raíz cuadrada de 19384​

Raíz cuadrada de 19384