Math Problem Statement
面積が200㎡の長方形の土地がある。この土地の1辺を5m伸ばし、他辺を2m縮めても面積は変わらない。この土地の2辺の長さを求めよ。
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Simultaneous Equations
Area of Rectangles
Quadratic Equations
Formulas
Area of a rectangle: A = length × width
Quadratic equation: ax^2 + bx + c = 0
Simultaneous equations: Substitution method
Theorems
Quadratic formula: x = (-b ± √(b^2 - 4ac)) / 2a
Suitable Grade Level
Grades 9-11
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