(x-1)^2+2(x-3)^2=18-10x

3 min read Jun 07, 2024
(x-1)^2+2(x-3)^2=18-10x

Solving the Equation: (x-1)^2 + 2(x-3)^2 = 18 - 10x

In this article, we will solve the equation (x-1)^2 + 2(x-3)^2 = 18 - 10x using algebraic methods.

Step 1: Expand the Squares

The equation contains two squared terms: (x-1)^2 and (x-3)^2. Let's expand these squares using the formula (a-b)^2 = a^2 - 2ab + b^2.

(x-1)^2 = x^2 - 2x + 1

(x-3)^2 = x^2 - 6x + 9

Now, substitute these expansions into the original equation:

x^2 - 2x + 1 + 2(x^2 - 6x + 9) = 18 - 10x

Step 2: Simplify the Equation

Combine like terms on the left-hand side of the equation:

x^2 - 2x + 1 + 2x^2 - 12x + 18 = 18 - 10x

Combine the x^2 terms:

3x^2 - 14x + 19 = 18 - 10x

Step 3: Rearrange the Equation

Rearrange the equation to isolate the x terms on one side and the constants on the other:

3x^2 - 14x + 10x + 19 - 18 = 0

3x^2 - 4x + 1 = 0

Step 4: Factor the Quadratic

Try to factor the quadratic expression:

3x^2 - 4x + 1 = (3x - 1)(x - 1) = 0

This tells us that either (3x - 1) = 0 or (x - 1) = 0.

Step 5: Solve for x

Solve for x in each of the above equations:

3x - 1 = 0 --> 3x = 1 --> x = 1/3

x - 1 = 0 --> x = 1

Therefore, the solutions to the equation are x = 1/3 and x = 1.

Conclusion

In this article, we successfully solved the equation (x-1)^2 + 2(x-3)^2 = 18 - 10x using algebraic methods. The solutions to the equation are x = 1/3 and x = 1.

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