Answers

✨ Best Answer ✨

x^2+(x+1)^2=(x+2)^2+5
x^2+x^2+2x+1=x^2+4x+4+5
x^2-2x-8=0
(x-4)(x+2)=0
x=4,-2
自然数なのでx=4
A.4,5,6

本当にありがとうございます!
助かりました!

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