(x+y)2+(x-y)2
cac ban de lai cach giai voi va giai theo hang dang thuc tks
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Số tiền ca gốc lẫn lãi là:
(23000 x 125)+(125 x 1000)=3 000 000 (đ)
1 chai cả tiền gốc lẫn tiền lãi là:
3 000 000 : 125=24000 (đ)
5 chai vỡ mất cả gốc lẫn lãi là:
5 x 24000=120 000 (đ)
Để vẫn có lãi như ban đầu ,cửa hàng cần bán mỗi chai là:
3 000 000 :120=25000 (đ)
Đ/s:25000 Đồng
Ai k mk mk sẽ k lại
25000 đồng là đúng 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
ko có đáp án nhé . mk nói thật luôn . nếu sai bạn đừng k nhé !
15% của 600000 đồng là :
600000 : 100 x 15 = 90000 ( đồng )
Số tiền vốn là :
600000 - 90000 = 510000 ( đồng )
Đ/s : tiền lãi : 90000 đồng
tiền vốn : 510000 đồng .
a = 500 + x = 500 + 8075 = 8575
b = x - 500 = 8075 - 500 = 7575
\(\left(x+y\right)^2+\left(x-y\right)^2=\left(x^2+2xy+y^2\right)+\left(x^2-2xy+y^2\right)=2\left(x^2+y^2\right)\)
(x+y)2+(x-y)2 = ( x2 +2xy+y2 ) + (x2 -2xy+y2 ) =\(2\left(x+y\right)^2\)