Answers
Answers
(x+y+z)2乗=x2乗+y2乗+z2乗+2(xy+yz+zx)です
x2乗+y2乗+z2乗=(x+y+z)2乗-2(xy+yz+zx)となります。
よって、4×4-2×2=12となります。
ありがとうございます😊
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
(x+y+z)2乗=x2乗+y2乗+z2乗+2(xy+yz+zx)です
x2乗+y2乗+z2乗=(x+y+z)2乗-2(xy+yz+zx)となります。
よって、4×4-2×2=12となります。
ありがとうございます😊
Users viewing this question
are also looking at these questions 😉
ありがとうございます😊