Bai 1. Tim x, y biet
a. \(\left|2-3x\right|=\left|3x+5\right|\)
b. \(\dfrac{x+1}{7}=\dfrac{y-2}{5}\)va 3x-2y=4.
giúp tui bài này ik
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mời các cao nhân chỉ điểm cho tui
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Bai 1 :
Gia su x =\(\dfrac{a}{m}\), y = \(\dfrac{b}{m}\)(a,b,m thuoc Z ; m > 0) va x < y
Hay chung to rang neu chon z = \(\dfrac{2a+1}{2m}\) thi ta co x < z <y
Bai 1 :Tim GTLN cua A = -|1,5 - x| - 2
sao nhieu bai kho hieu trong violympic toan tieng anh the nhi
ai cho minh dap an vong 7 toan tieng anh vong 2 va 3 di
bai 3 nha
Bai 1: Tim x
a) \(|\text{x-1|+|2x+4|=3}\)
b) \(|x+\dfrac{1}{3}|=|3x-\dfrac{5}{6}|\)
c) 4x.\(\left(x+\dfrac{1}{2}\right)=0\)
d) 3x.(x+2)-5(x+2)=0
bai 1: tinh hieu
a. (3x + y - z) - (4x - 2y + 6z)
b. (x3 + 6x2 + 5y3) - (2x3 - 5x + 7y3)
c. (5,7x2y - 3,1xy + 8y3) - (6,9xy - 2,3x2y - 8y3)