Question

1) What is the coefficient of x in the division (18x^3 + 12x^2 - 3x) + 6x^2
3
2
-0.5
-3
2) Divide (2x^3 - x^2 - 24x + 12) divided by (2x-1)
x^2 - 1
x^2 - 12
2x - 1
x^2 - 1/2x - 12
3) Simplify 2a+2 over a^2-1
2 over a - 1
2a +2 over a^2 - 1
-2
a+1 over a-1

Answer 1

need help?

Answer 2

yes

Answer 3

okies im here to help

Answer 4

aswner is : - Simplifying
18x3 + -12x2 + 6x = 0

Reorder the terms:
6x + -12x2 + 18x3 = 0

Solving
6x + -12x2 + 18x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '6x'.
6x(1 + -2x + 3x2) = 0

Ignore the factor 6.

Answer 5

that helped?

Answer 6

not really. i now know 2) is x^2 - 12

Answer 7

ok ill try again

Answer 8

3) 2/a-1

Answer 9

Simplifying
18x3 + -12x2 + 6x = 0

Reorder the terms:
6x + -12x2 + 18x3 = 0

Solving
6x + -12x2 + 18x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '6x'.
6x(1 + -2x + 3x2) = 0

Ignore the factor 6.
Subproblem 1
Set the factor 'x' equal to zero and attempt to solve:

Simplifying
x = 0

Solving
x = 0

Move all terms containing x to the left, all other terms to the right.

Simplifying
x = 0
Subproblem 2
Set the factor '(1 + -2x + 3x2)' equal to zero and attempt to solve:

Simplifying
1 + -2x + 3x2 = 0

Solving
1 + -2x + 3x2 = 0

Begin completing the square. Divide all terms by
3 the coefficient of the squared term:

Divide each side by '3'.
0.3333333333 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '-0.3333333333' to each side of the equation.
0.3333333333 + -0.6666666667x + -0.3333333333 + x2 = 0 + -0.3333333333

Reorder the terms:
0.3333333333 + -0.3333333333 + -0.6666666667x + x2 = 0 + -0.3333333333

Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000
0.0000000000 + -0.6666666667x + x2 = 0 + -0.3333333333
-0.6666666667x + x2 = 0 + -0.3333333333

Combine like terms: 0 + -0.3333333333 = -0.3333333333
-0.6666666667x + x2 = -0.3333333333

The x term is -0.6666666667x. Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = -0.3333333333 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = -0.3333333333 + 0.1111111112

Combine like terms: -0.3333333333 + 0.1111111112 = -0.2222222221
0.1111111112 + -0.6666666667x + x2 = -0.2222222221

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = -0.2222222221

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
x = {0}

Answer 10

that's not even one of the choices

Answer 11

no im just sayin its a example Example problem like urs so now u canc how they do it then u do same way they did it ^