Math  /  Algebra

Question(10) 2x2x=1x1\frac{2}{x^{2}-x}=\frac{1}{x-1}

Studdy Solution

STEP 1

What is this asking? We need to find the value of xx that makes this equation true! Watch out! Be careful not to divide by zero.
We'll need to check if any solutions make the denominators zero.

STEP 2

1. Simplify the equation
2. Solve for xx
3. Check for extraneous solutions

STEP 3

Let's **factor** the denominator of the first term: x2x=x(x1)x^2 - x = x \cdot (x-1).
So, our equation becomes 2x(x1)=1x1.\frac{2}{x \cdot (x-1)} = \frac{1}{x-1}.

STEP 4

To get rid of those pesky fractions, we'll **multiply** both sides of the equation by x(x1)x \cdot (x-1).
This gives us x(x1)2x(x1)=x(x1)1x1.x \cdot (x-1) \cdot \frac{2}{x \cdot (x-1)} = x \cdot (x-1) \cdot \frac{1}{x-1}.

STEP 5

Now we can **simplify** by dividing to one.
On the left side, both xx and (x1)(x-1) divide to one, leaving us with just 22.
On the right side, (x1)(x-1) divides to one, leaving us with xx.
So our simplified equation is 2=x.2 = x.

STEP 6

Let's plug our potential solution x=2x = \mathbf{2} back into the original equation.
The denominators are x2xx^2 - x and x1x - 1. If x=2x = 2, then x2x=222=42=2x^2 - x = 2^2 - 2 = 4 - 2 = 2, and x1=21=1x - 1 = 2 - 1 = 1.
Neither of these is zero, so x=2x = \mathbf{2} is a valid solution!

STEP 7

Our solution is x=2x = \mathbf{2}!

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