3.can bac hai cua a tru 1 bang 0
giup mk vs
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nam phan chin tru can bac hai cua 2x bang bon phan chin
\(\frac{5}{9}-\sqrt{2x}=\frac{4}{9}\)
\(\sqrt{2x}=\frac{5}{9}-\frac{4}{9}\)
\(\sqrt{2x}=\frac{1}{9}\)
\(\left(2x\right)^2=\frac{1}{9}\)
\(2x=\frac{1}{3}\)
\(x=\frac{1}{3}:2\)
\(x=\frac{1}{6}\)
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\(\frac{5}{9}-\sqrt{2x}=\frac{4}{9}\)
\(\sqrt{2x}=\frac{5}{9}-\frac{4}{9}\)
\(\sqrt{2x}=\frac{1}{9}\)
\(\sqrt{2x}=\sqrt{\frac{1}{81}}\)
\(2x=\frac{1}{81}\)
\(x=\frac{1}{162}\)
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tim z,y,z thoa
can x cong can tat ca y tru 1 cong can tat ca z tru 2 bang 1 phan 2 ( x cong y cong z)
tim GTN cua B bang 1 phan x tru can x cong 1
tim x thuoc z de can x cong 1 phan can 3 tru 3 la so nguyen
tinh tong T bang 1 phan can 1 cong can 2 cong 1 phan can 2 cong can 3 cong ... cong den 1 phan can 99 cong can 100
tim gia tri nho nhat cua:E bang gia tri tuyet doi cua can x tru 7 cong gia tri tuyet doi cua can x tru 5
Can bac 2 cua 6,8 binh phuong tru 3,2 binh phuong
\(\sqrt{6,8^2-3,2^2}=\sqrt{\left(6,8+3,2\right)\left(6,8-3,2\right)}=\sqrt{10\cdot3,6}=\sqrt{36}=6\)
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cho cac so a,b>0.CMR: can bac hai cua a + can bac hai cua b > can bac hai cua a+b
1. tbc cua 3 so la 19/60 .neu gap so thu nhat len 4 lan thi tbc cua chung se la 13/20 .tim 3 so , biet so thu hai hon so thu ba 1/6
2. trong mot phep tru co tong so bi tru ,so tru va hieu la 1998.biet hieu so bang 4/5 so tru .hay tim so bi tru va so tru , hieu
can thu nhat bang 40%can thu hai.nguoi ta do 3 lit cua can thu hai sang can thu nhat thi hai can bang nhau.tinh tong so lit cua 2 can luc dau.
cac bn ghi cach giai cho to,ai lam dung va nhanh nhat mk tick
hai ban Bac va Trung cos mot so quyen sach biet rang so sach cua bac bang 3/5 tong so sach cua hai ban so sach cua trung bang 1/2 tong so sach hai ban va bac va bac co nhieu hon trung 5 quyen HOI:
A)CA HAI BAN CO BAO NHIEU QUYEN SACH
B)MOI BAN CO BAO NHIEU QUYEN
P/S:NHO GIAI CHI TIET NHE
cho tam giac ABC , goc A cong goc A cong goc B bang 105 do,AB+ can bac hai cua hai nhan AC bang 2 nhan BC .Tinh goc B.