Mathematics
Senior High
Solved

この問題を解説付きで教えてください。

Answers

✨ Best Answer ✨

x^3+y^3=(x+y)^3-3xy(x+y)
50=5^3-3xy×5
50=125-15xy
15xy=75
xy=5

x^2+y^2=(x+y)^2-2xy
=25-10
=15
x^5+y^5=(x^3+y^3)(x^2+y^2)-x^2y^2(x+y)
=50×15-25×5
=625

間違ってたらすみません…

Post A Comment
Were you able to resolve your confusion?