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Answer:
AB = 5√2
Explanation:
The length of AB is given by the distance formula:
d = √((x2 -x1)² +(y2 -y1)²)
d = √((4 -(-3))² +(1 -2)²) = √(7² +(-1)²) = √(49 +1) = √50
The length of AB is √50 = 5√2.
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