Question

factor the high-degree polynomial 2x^5 -4x^3+2x to solve the polynomial equation 2x^5-4x^3+2x=0
A.x=2
B. X=-1vx=0 x=1
C. X=0 x=1
D. X=-1 x=1

Answer 1

Are you sure

Answer 2

To factor the polynomial \(2x^5 - 4x^3 + 2x\), we can start by factoring out the common term.

The common factor in each term is \(2x\):

\[
2x^5 - 4x^3 + 2x = 2x(x^4 - 2x^2 + 1)
\]

Now, we need to factor the quadratic-like expression \(x^4 - 2x^2 + 1\). We can make a substitution \(y = x^2\), which transforms it into:

\[
y^2 - 2y + 1 = (y - 1)^2
\]

Replacing \(y\) back, we have:

\[
(x^2 - 1)^2
\]

The expression \(x^2 - 1\) can be further factored as it is a difference of squares:

\[
x^2 - 1 = (x - 1)(x + 1)
\]

So we can write:

\[
(x^2 - 1)^2 = [(x - 1)(x + 1)]^2 = (x - 1)^2(x + 1)^2
\]

Putting it all together, we factor the original polynomial:

\[
2x^5 - 4x^3 + 2x = 2x(x - 1)^2(x + 1)^2
\]

Next, we can solve the equation \(2x^5 - 4x^3 + 2x = 0\):

Setting the factored form equal to zero:

\[
2x(x - 1)^2(x + 1)^2 = 0
\]

This gives us the solutions:

1. \(2x = 0 \Rightarrow x = 0\)
2. \((x - 1)^2 = 0 \Rightarrow x = 1\) (with multiplicity 2)
3. \((x + 1)^2 = 0 \Rightarrow x = -1\) (with multiplicity 2)

The unique solutions are:

- \(x = 0\)
- \(x = 1\)
- \(x = -1\)

Thus, the answer from your options for the unique solutions is:

C. \(x = 0, x = 1\)

Answer 3

Let's review the factorization and the solutions step by step to ensure the correctness:

We start with the polynomial:

\[
2x^5 - 4x^3 + 2x = 0
\]

First, we factor out the common term \(2x\):

\[
2x(x^4 - 2x^2 + 1) = 0
\]

Next, we simplify the quartic polynomial \(x^4 - 2x^2 + 1\). We can rewrite this expression by substituting \(y = x^2\):

\[
y^2 - 2y + 1 = (y - 1)^2
\]

Replacing \(y\) back gives us:

\[
(x^2 - 1)^2
\]

The expression \(x^2 - 1\) can further be factored as follows:

\[
x^2 - 1 = (x - 1)(x + 1)
\]

Thus:

\[
(x^2 - 1)^2 = [(x - 1)(x + 1)]^2 = (x - 1)^2(x + 1)^2
\]

Putting this into our original polynomial, we have:

\[
2x(x - 1)^2(x + 1)^2 = 0
\]

Now, we can find the roots by setting each factor to zero:

1. \(2x = 0 \Rightarrow x = 0\)
2. \((x - 1)^2 = 0 \Rightarrow x = 1\) (with multiplicity 2)
3. \((x + 1)^2 = 0 \Rightarrow x = -1\) (with multiplicity 2)

Collectively, the solutions are:

- **\(x = 0\)** (from \(2x = 0\))
- **\(x = 1\)** (from \((x - 1)^2 = 0\))
- **\(x = -1\)** (from \((x + 1)^2 = 0\))

So the complete set of unique solutions is **\(x = 0\)**, **\(x = 1\)**, and **\(x = -1\)**.

From the options you provided, the correct choice would be:

**C. \(x = 0, x = 1\)**

This is the simplest representation of the unique roots. However, if considering all roots including their multiplicities, we would list them as \( x = 0, x = 1\) (multiplicity 2), and \( x = -1\) (multiplicity 2).

If you need further clarification or details, feel free to ask!