`(2x+1)^{2}=(2x+1)^{4}`
`=>(2x+1)^{4}-(2x+1)^{2}=0`
`=>(2x+1)^{2}.[(2x+1)^{2}-1]=0`
`=>(2x+1)^{2}=0` hoặc `(2x+1)^{2}-1=0`
`=>2x+1=0` hoặc `2x+1=1` hoặc `2x+1=-1`
`=>x=-1/2` hoặc `x=0` hoặc `x=-1`
Bài 2 Tìm x biết 1, (2x-2).(3x+1)-(3x-2).(2x-3)=5 2,(1-3x).(3x-5)-(2x-4)(2-3x)=x-6 3,(2x-1).(4x^2+2x+1)-(2x+1)(4x^2-2x+1)=5x+6 Giúp tớ với
Tìm nghiệm : a) (2x-3).(2x+3) B)(x-4).(x-1).(x-2) C)2x(3x-1)-3x(5+2x) D)(3x-2).(3x+2)-4.(x-1)
b1:
[4+2x]=-3x [3x-1]+2=x
[x+15]+1=3x [2x-5]+x=2
b2:
[2x-5]=x+1 [3x-2]-1=x
[3x-7]=2x+1 [2x-1]+1=x
1a) 2x+1/2=-5/3
B) -3x-3/4=6/5
C) 3/2x-2/5=1/2x-1/4
D) 1/2(x+2)-4(x-1/4)=1/2x
E) 4(1/2-x)-5(x-3/10)=7/4
Nhớ giải cuj thể nha
1) 1/3x-2/5(x+1)=0
2) 3/4+1/4x=1/2+1/2x
3) x+2/0,5=2x+1/2
4) (2x+1)^4=(2x+1)^6
giúp mk vs cảm ơn nhìu
mấy bn check hộ mk, nếu sai hãy chỉ ra giùm và sử lại nhé,
A=|x-2|+|2x-3|+|3x-4| ap dung BĐT|x|+|y|>=|x+y| |x-2|+|3x-4|=|x-2|+|4-3x|>=|x-2+4-3x|=|-2x-2| =)A= |x-2|+|4-3x|+|2x-3|>=|-2x+2|+|2x-3|>=|-2x+2+2x-3| =|-1|=1 dau = xay ra khi (x-2)(4-3x)>=0 va (-2x+2)(2x-3)>=0 =)4/3
a,4.|3x-1|=|6x-2|+|-1,5|
b,2024.|2x-1|=2025.|1-2x|-|-2|
c,|2x+1|+|3x-1|=0
Thực hiện phép tính
a) (2x^4-5x^2+x^3-3-3x):(x^2-3) b) (x^5+x^3+x^2+1):(x^3+1)
c) (2x^3+5x^2-2x+3):(2x^2-x-1) d) (8x-8x^3-10x^2+3x^4-5):(3x^2-2x+1)
Mik cần gấppp
7x^3-2x^2:-2x^2+(\(\dfrac{5}{4}\)x^2-3x):x-\(\dfrac{1}{2}\)x(x-1)(2x+1)
Tìm x:
a) 3x.(1 - 2x) + 6x^2 - 7x = 8.(1 - 2x) - 9
b) 2x.(1 + 3x) - 3x.(4 +2x) = 3x - 4
