3 years ago

What is the area of the trapezoid below

Mathematics

1 answer:

saw5 [17]3 years ago

6 0

Answer:

b. 246

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

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

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

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

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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

What is the area of the trapezoid below​

What is the area of the trapezoid below