✨ Best Answer ✨
それぞれの式を2乗すると、
(a+b)²=(2√3)² a²+2ab+b²=12･･･①
(a-b)²=(2√2)² a²-2ab+b²=8･･･②
①+②より、
2(a²+b²)=20 a²+b²=10
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✨ Best Answer ✨
それぞれの式を2乗すると、
(a+b)²=(2√3)² a²+2ab+b²=12･･･①
(a-b)²=(2√2)² a²-2ab+b²=8･･･②
①+②より、
2(a²+b²)=20 a²+b²=10
Users viewing this question
are also looking at these questions 😉
ありがとうございます!