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Given (18, 3) and (x,-5), find all x such that the distance between these two points is 17. Separate multiple answers with a
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Sagot :

To solve for the value(s) of [tex]\( x \)[/tex] such that the distance between the points [tex]\((18, 3)\)[/tex] and [tex]\((x, -5)\)[/tex] is 17, we use the distance formula:

[tex]\[ \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} = \text{distance} \][/tex]

Given:
- [tex]\( (x_1, y_1) = (18, 3) \)[/tex]
- [tex]\( (x_2, y_2) = (x, -5) \)[/tex]
- distance = 17

First, plug in the given coordinates and the distance into the distance formula:

[tex]\[ \sqrt{(x - 18)^2 + (-5 - 3)^2} = 17 \][/tex]

Simplify inside the square root:

[tex]\[ \sqrt{(x - 18)^2 + (-8)^2} = 17 \][/tex]
[tex]\[ \sqrt{(x - 18)^2 + 64} = 17 \][/tex]

Next, square both sides to eliminate the square root:

[tex]\[ (x - 18)^2 + 64 = 17^2 \][/tex]
[tex]\[ (x - 18)^2 + 64 = 289 \][/tex]

Now, isolate the [tex]\((x - 18)^2\)[/tex] term:

[tex]\[ (x - 18)^2 = 289 - 64 \][/tex]
[tex]\[ (x - 18)^2 = 225 \][/tex]

To solve for [tex]\( x \)[/tex], take the square root of both sides:

[tex]\[ x - 18 = \pm 15 \][/tex]

This gives us two possible equations:

1. [tex]\( x - 18 = 15 \)[/tex]
2. [tex]\( x - 18 = -15 \)[/tex]

Solve each equation for [tex]\( x \)[/tex]:

1. [tex]\( x - 18 = 15 \)[/tex]
[tex]\[ x = 33 \][/tex]

2. [tex]\( x - 18 = -15 \)[/tex]
[tex]\[ x = 3 \][/tex]

Thus, the values of [tex]\( x \)[/tex] that satisfy the given condition are:

[tex]\[ x = 33, 3 \][/tex]

So, the answer is:
[tex]\[ x = 33, 3 \][/tex]