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\(\frac{2x-3}{2}=\frac{32}{2x-3}\)
\(\Rightarrow\left(2x-3\right).\left(2x-3\right)=2.32\)
\(\left(2x-3\right)^2=64=8^2=\left(-8\right)^2\)
=> 2x-3 = 8 => 2x = 11 => x = 11/2
2x -3 = -8 => 2x = -5 => x = -5/2
KL:...
giup wm giai bai toan nay
cho: -1\2=y-2\3=z-3\4 va 2x+y-z=50
tim x,y,z
Tim x,y,z biet:2(x-1)-3(2x+2)-4(2x+3)=16
giai day du
Tim x biet :
7x+2 +7x+1+7 /57 = 52x +52x+1+52x+3 /131
Nhanh tay giai giup to di may than dong toan oi
Hihihi.Hi moi nguoi.Minh se dat mot cau hoi ve dai so lop 7,mong moi nguoi chi giai><,boi vi toan minh hoc chua gioi lam nen co cac bai toan con thac mac,len day de mong nhan duoc su giup do,de toan nhu sau:(1)Da thuc P(x)=x2016 +2013x + 2012 co ngiem duong khong?Vi sao?. 2 Bai nua nhe(*^-^*):
(2)Cho hai da thuc: M(x)=2,52 -0,5x-x3-1
1/2N(x)=-x3+2,5x2-6+2x
a)Tim A(x)=M(x)-N(x).Sau do tim mot ngiem cua da thuc A(x)
b)Tim da thucB(x) biet B(x)=M(x)+N(x).Cho biet bac cua da thuc B(x).
(3)Cho da thuc:f(x)=ab2 + bx + c.Chung to neu f(x) co ngiem x=-1 thi b=a+c.
MOT BAI NUA THOI MA.NHA NHA NHA MOI NGUOI^_^:
(4)Cho hai da thuc:A=(-1/2axy3)2 va B=(-3a2 x2)3 (a la hang so khac 0).
a)Tinh M=A.B roi cho biet he so va phan bien cua M
b)Tim bac cua M.
AI CO CAU TRA LOI NHAN TIN TRA LOI CHO MINH BIET NHAAAAA.CAM ON!!!!!.
BAI 1 : Tim x;y;z biet 6x 3/5 4y 6x/7 3z 4y Va 2x 3y 5z 21
ai giai minh bai toan tim x\(2^x+2^{x+1}+2^{x+2}+2^{x+3}=120\)
a, Tim x biet:/x-2/+/3-2x/=2x+1
b, Tim x,y thuoc Z biet:xy+2x-y=5
c, tim x,y,z, biet :2x=3y;4y=5zva 4x-3y+5z=7
a, \(\frac{3}{4}-\frac{2}{5}.x=x\)
b,( 2x - 1 ) . ( 3x - 1/5 ) . ( 4 - 2x ) = 0
bai toan tim x
giúp mk nhé !
mai mk phải nộp òi
Tim x,y,z biet:2(x-1)-3(2x+2)-4(2x+3)=16