13 Answered Questions for the topic Cubic Equation

Cubic Equation Algebra

09/23/18

#### Find c+d if the roots of the cubic equation x^3-19(x^2)+cx+d=0 are three positive integers in a geometric sequence.

There is an equation x3 + 19x2 + cx + d = 0. There are three positive integer solutions to this equation, x1, x2, and x3. It is known that x1*r=x2 and x2*r=x3. You are asked to find the value of c+d.
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Cubic Equation Binomial Theorem

10/12/17

#### f(x) = ax^3 + (b - ad)x^2 + (c - bd)x - cd, where a = 26, b = -8, c = 21 and d = 8. What value of x satisfies the equation f(x) = 0?

I'm so bad at these topics ): I need help with this and some explanation, thanks!

Cubic Equation Multiple Choice

07/23/15

#### The equation x^3 + 5x^2 +1 = 7 models the volume of a shipping container where x is the width. Graph the equation to find the width of the box.

Please answer this question I have asked it 2 times before and no one answers.
Choose one of these answers it is Multiple Choice
a. 1 ft.
b. 2 ft.
c. 4 ft.
d. 7 ft.

Cubic Equation Long Division

07/22/15

#### Divide using long division. (MC CHOOSE ONE ANSWER)

a. 4x2-14x+44
b. 4x2-14x+44 R -130
c. 4x2+10x-40
d. 4x2+10x-40 R 134

Cubic Equation

07/19/15

#### Which value is NOT a solution of x^3 + 64 = 0? (MULTIPLE CHOICE)

Which value is NOT a solution of x3 + 64 = 0?
a. 2+2i√3
b. 2-2i√3c. 4d. –4

Cubic Equation

07/19/15

#### Solve the equation in the real number system: 2x^3+x^2-7x-6=0 (MULTIPLE CHOICE)

Solve the equation in the real number system: 2x3+x2-7x-6=0
a. x=-3/2, -1, 2
b. x=-1, 2
c. x=-2, -1, 2
d. -3, -1, 2

Cubic Equation

07/18/15

#### Divide using long division. (-2x^3-4x^2-4x+2)/(x-4) (MULTIPLE CHOICE)

Divide using long division. (-2x3-4x2-4x+2)/(x-4)

Cubic Equation

07/18/15

#### Determine if x + 3 is a factor of -3x^3+6x^2+6x+9. How do you know? (MULTIPLE CHOICE)

Determine if x + 3 is a factor of -3x3+6x2+6x+9. How do you know?
a. yes, because the remainder is 126b. no, because the remainder is –108c. yes, because the remainder is –108d. no, because the...
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Cubic Equation

07/18/15

#### Graph the equation x^3 + 3x^2 = x^2 to find its solutions. (MULTIPLE CHOICE)

Graph the equation x3 + 3x2 = x2 to find its solutions.
a. 0 and –4b. 0 and –2c. –2 and –4d. –2 and–4
Choose one thanks

Cubic Equation

07/18/15

#### Solve the equation in the real number system: 9x^3+9x^2-4x-4=0... (MULTIPLE CHOICE)

Solve the equation in the real number system: 9x3+9x2-4x-4=0
a. -3, -1, 3
b. -5, -1, 5
c. -1, -2/3, 2/3
d. -2/3, 2/3, 1
Choose one thanks

Cubic Equation

07/16/15

#### The equation x^3 + 5x^2 +1 = 7 models the volume of a shipping container where x is the width. Graph the equation to find width of the box. (Multiple Choice)

The equation x^3 + 5x^2 +1 = 7 models the volume of a shipping container where x is the width. Graph the equation to find width of the box. (Multiple Choice)a. 1 ft.b. 2 ft.c. 4 ft.d. 7 ft.

Cubic Equation

07/12/15

#### The equation x^3 + 5x^2 +1 = 7 models the volume of a shipping container where x is the width. Graph the equation to find width of the box. (Multiple Choice)

a. 1 ft.
b. 2 ft.
c. 4 ft.
d. 7 ft.
Answer please choose one of the answers

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