$\"\"$

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The points are given by $\"\"$ and $\"\"$ .

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Find the distance between the points $\"\"$ and $\"\"$ . $\"\"$ (Distance formula in space)

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(Substitute $\"\"$ ) $\"\"$

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$\"\"$ (Product of two same signs is positive) $\"\"$ (Simplify)

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$\"\"$ (Evaluate powers)

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$\"\"$ (Add: $\"\"$ ) $\"\"$

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Find the midpoint of the points $\"\"$ and $\"\"$ .

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$\"\"$

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(Substitute $\"\"$ ) $\"\"$

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$\"\"$ (Product of two op[posite signs is negative)

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$\"\"$ (Simplify)

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$\"\"$ (Divide) $\"\"$

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The value of $\"\"$ and mid point is $\"\"$ .