Find the distance between the points (-5, 7) and
(-1,3).
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Answer:
(-5,7) & (-1,3).
x1=-5 & x2=-1.
y1=7 & y2=3.
Distance=√(x2-x1)²+(y2-y1)²
=√(-1-(-5))²+(3-7)².
=√(-1+5)²+(-4)². (Because -×-=+ & -×+=- & largest number is important).
=√(4)²+(-4)². (Because -×+=- & largest number is important).
=√16+16.
=√32.
=√2×16.
=4√2. (Because √16=4).
I think this is your answer.
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