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Which graph can be used to find the solution(s) to [tex]\(x^2 - 4x + 4 = 2x + 1 + x^2\)[/tex]?

Sagot :

To find the solution(s) to the equation [tex]\(x^2 - 4x + 4 = 2x + 1 + x^2\)[/tex], we can use the graph of two functions. The steps are as follows:

1. Rewrite the equation in a standard form:

We start with the equation:
[tex]\[ x^2 - 4x + 4 = 2x + 1 + x^2 \][/tex]

2. Simplify the equation:

Combine like terms on both sides of the equation. Subtract [tex]\(x^2\)[/tex] from both sides:
[tex]\[ x^2 - 4x + 4 - x^2 = 2x + 1 + x^2 - x^2 \][/tex]

Simplifying this gives:
[tex]\[ -4x + 4 = 2x + 1 \][/tex]

3. Further simplify to isolate the variable [tex]\(x\)[/tex]:

Move all the terms involving [tex]\(x\)[/tex] to one side and constant terms to the other side:
[tex]\[ -4x - 2x = 1 - 4 \][/tex]

Combine like terms:
[tex]\[ -6x = -3 \][/tex]

4. Solve for [tex]\(x\)[/tex]:

Divide both sides by [tex]\(-6\)[/tex]:
[tex]\[ x = \frac{-3}{-6} \][/tex]

Simplify the fraction:
[tex]\[ x = \frac{1}{2} \][/tex]

5. Interpret the solution graphically:

To confirm this result graphically, you can plot the functions:
[tex]\[ y_1 = x^2 - 4x + 4 \][/tex]
and
[tex]\[ y_2 = 2x + 1 + x^2 \][/tex]

Graph these two functions on the same coordinate plane. The solution to the equation [tex]\(x^2 - 4x + 4 = 2x + 1 + x^2\)[/tex] is the [tex]\(x\)[/tex]-value where the graphs of [tex]\(y_1\)[/tex] and [tex]\(y_2\)[/tex] intersect.

Since the solution as calculated is [tex]\(x = \frac{1}{2}\)[/tex], the graphs of the two functions will intersect at [tex]\(x = \frac{1}{2}\)[/tex]. Therefore, the point of intersection corresponds to [tex]\(x = \frac{1}{2}\)[/tex] and confirms our solution.