the distance between a(a+b,a-b) and b(a-b,-a-b)
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Answer:
ab = √(x²-x¹)²+(y²-y¹)²
ab = √{(a-b)-(a+b)}² +{(-a-b)+(a-b)}²
ab = √(-2b)²+(-2b)²
ab = √4b²+4b²
ab= √ 8b²
ab = 2√2 b
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