Mathematics
Junior High
Resolved
(1、2)このような式になるのはなぜですか?
次の2点A, B間の距離を求めよ。
(1)A(0,0),B(3,9)
9
20√
(2)A(6,5),B(2,3)
3
(319)
4 (1) 3√√10
【解説】
(2) 2√5
(1) √(9-0)²+(3-0)2
= 81 + 9
=
90
= 3√10
(2) √(6-2)²+(5-3) 2
=√16+4
=√20
=2√5
Noral FIA
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