| x -1/2 | = 4 <=> x -1/2 = 4 hoặc x -1/2 = -4
Với x -1/2 = 4
=> x = 4 + 1/2
=> x = 9/2
Với x -1/2 = -4
=> x = -4 + 1/2
=>x = -7/2
Vậy...
Ps : Mấy câu sau lm như vậy ák bạn!!! :3
Cau 1; cho\(\frac{x}{2}=\frac{y}{5}\)vaxy=90. So cap (x;y) thoa man la
Cau 2 : Cho a+d=b+c va \(a^2+d^2=b^2+c^2\)(b,d khac 0).Khi do 4 so lap thanh ti le thuc nao
Cau 3 :GTLN cua phan so \(\frac{7n-8}{2n-3}\)
Cau 4: Cho A=\(\frac{12}{x-15}\) dieu kien de 0<A<1 va A>1
Cau 5 ; tim x biet /-x-5//x=5=10
Cau 6: tap hop cac so nguyen cua x thoa man (3x^2-51)^2014=(-24)^2014
Cau 7: tap hop cac so thoa man /x-y/+/y+9/25/=0
tim n
cau a ; (9/25)^n=(3/5)^4
cau b ; (2^n-2)^2=16
cau c (1-x)^3=216
3^x^2-3^x=162
cau 1
cau 2
cau 3
cau 4
cau 5
giúp với mn :>>
cau 1:tinh gia tri bieu thuc
3/4 +1/1/4 *2/2/3-(-1/2)^2:6/5
cho ma co 2 dau/la hon so,con 1 dau la phan so,con ^2 la mu 2
cau 2:tim x biet
( x-1)^5= -32
cho ^5 co nghia la mu 5
xin moi nguoi hay giup not cau nay , day la bai cuoi roi ah!!
tim x:
e,(3x-1)(2x+7)-(x+1)(6x-5)=16
f,x(x+1)(x+6)-x^3=5x
Thanks moi nguoi trc va vo cung cam on ah!!~
Giai giúp minh voi! 1 cau cung duoc ( Abs (x) la tri tuyet doi cua x vi may minh khong go duoc dau tri tuyet doi )
Tim gia tri nho nhat
a Abs(x-1/4) + Abs(x-3/4)
b. Abs(x-1) + Abs(x-2) + Abs(x-5)
Tim x
Abs(x-3/2) + Abs(2,5-x) = 0
Abs(3x-1) = Abs(4-x)
Abs(2x+3) = x+3
a) |x-2|+|x-5|=3
b) |3x-5|+|3x-1|=6
c) 2|x-3|+|2x+5|=11
d) |x+1|+|2x-3|=|3x-2|
e) |x-3|+|5-x|+2|x-4|=2
CẢM ƠN Ạ :)
tim x trong cac ti le thuc sau:
a, ..
-0,75/x=-1/1/2/-4/5 b, -1/3x+1/2/-5/4=-2/2/5/0,35 c, 2x-4/3=6/x-1 d, 2x-1/x+3
Tìm x biết :
a, 4.(18 - 5x) - 12.(3x - 7) = 15.(2x - 16) - 6(x + 14)
b, 5.(3x + 5) - 4.(2x - 3) = 5x + 3.(2x + 12) + 1
c, 2.(5x - 8) - 3.(4x - 5) = 4.(3x - 4) + 11
d, (3x + 2)(2x + 9) - (x + 2)(6x + 1) = (x + 1) - (x - 6)
e, (8x - 3)(3x + 2) - (4x + 7)(x + 4)= (2x + 1)(5x - 1) - 33
