Các câu hỏi tương tự
tìm x biết
a,(x-2)^2-(x+3)^2-4(x+1)=5
b, (2x-3)(2x+3)-(x-1)^2-3x(x-5)=-44
c, (5x+1)^2-(5x+3)(5x-3)=30
d,(x+3)^2+(x-2)(x+2)-2(x-1)^2=7
giúp mik vs mik cần gấp
1) √(2x-1) <= 8-2x
2) √[(x+1)(4-x)] > x-2
3) √(x-2x^2+1) > 1-x
4) √(x+5) - √(x+4) > √(x+3)
5) √(5x-1) - √(x-1) > √(2x-4)
6) √(x+3) >= √(2x-8) + √(7-x)
7) √(x+2) - √(3-x) < √(5-2x)
8) √(x+1) > 3 - √(x+4)
9) √(5x-1) - √(4x-1)<= 3√x
10) { {√[2(x^2-16)]} / √(x-3) }+ √(x-3) > (7-x) / √(x-3)
Giúp mình 10 câu này với ạaa
Gỉai các phương trình sau
a) 5/-x^2+5x-6 + x+3/2-x = 0
b) x/2x+2 - 2x/x^2-2x-3 = x/6-2x
c) 1/x-1 - 3x^2/x^3-1 = 2x/x^2+x+1
d) x+25/2x^2-50 - x+5/x^2-5x = 5-x/2x^2+10x
1)x^3 -2x-1
2) x^3 +3x^2 -4
3) x^3y^3 +x^2y^2 +4
4) x^3 + 5x^2 -9xy^2, +5y^3
5) x^4 + x^3 + 6x^2 + 5x + 5
Giải pT
1) x^3-5x^2+3x+1=0
2) x^4-3x^3+4x^2-3x+1=0
3) 3x^3+2x^2-4x-1=0
4) x^4+x^3-13x^2-x+10=0
5) x^4-2x^3-13x^2+14x+24=0
6) 3x^3+x^2-5x-3=0
Giải các ptr saua, 10x2 + 17x + 3 2( 2x - 1 ) - 15b, x2 + 7x - 3 x( x - 1 ) - 1c, 2x2 - 5x - 3 (x + 1)(x - 1) + 3d, 5x2 - x - 3 2x( x - 1) - 1 + x2e, -6x2 + x - 3 -3x( x - 1) -11f, -4x2 + x ( x - 1) - 3 x( x + 3 ) + 5g, x2 - x - 3( 2x + 3 ) -x( x - 2) - 1h, -x2 - 4x - 3( 2x - 7 ) -2x( x + 2 ) - 7i, 8x2 - x - 3x( 2x - 3 ) -x( x - 2 )k, 3( 2x + 3 ) -x( x - 2 ) -1
Đọc tiếp
Giải các ptr sau
a, 10x2 + 17x + 3 = 2( 2x - 1 ) - 15
b, x2 + 7x - 3 = x( x - 1 ) - 1
c, 2x2 - 5x - 3 = (x + 1)(x - 1) + 3
d, 5x2 - x - 3 = 2x( x - 1) - 1 + x2
e, -6x2 + x - 3 = -3x( x - 1) -11
f, -4x2 + x ( x - 1) - 3 = x( x + 3 ) + 5
g, x2 - x - 3( 2x + 3 ) = -x( x - 2) - 1
h, -x2 - 4x - 3( 2x - 7 ) = -2x( x + 2 ) - 7
i, 8x2 - x - 3x( 2x - 3 ) = -x( x - 2 )
k, 3( 2x + 3 ) = -x( x - 2 ) -1
Tìm x
1) \(\sqrt{\dfrac{3x-1}{x+2}}=2\)
2)\(\sqrt{\dfrac{5x-7}{2x- 1}}=2\)
3)\(\dfrac{\sqrt{x}-2}{\sqrt{x}+1}=\dfrac{\sqrt{x}-1}{\sqrt{x}+3}\)
4) \(\dfrac{\sqrt{x}-3}{\sqrt{x}+2}=\dfrac{\sqrt{x}-2}{\sqrt{x}+1}\)
I 7+5x I = 1-4x
I 4x^2 - 2x I + 1 = 2x
I x^2 - 5x + 4 I = x+4
I 4 - 3x I = 3x -4
I 1+5x I = 1 + 5x
I x^2 - 3x + 1 I = 2x-3
I x-1 I = x^2 -x
giải phương trình:frac{2x}{6x^2-x+3}+frac{5x}{4x^2+5x+2}+frac{x}{2x^2+3x+1}frac{1}{3}b, frac{1}{x+1}+frac{2}{x+2}+frac{1}{x+3}frac{1}{x+4}+frac{2}{x+5}+frac{1}{x+6}c, x^2+frac{9x^2}{left(x+3right)^2}7d,frac{1}{x-1}+frac{1}{x}+frac{1}{x+1}+frac{1}{x+2}+frac{1}{x+3}0e,frac{9x}{x^2-2x+3}frac{5x^2+9x+15}{x^2+3x+3}
Đọc tiếp
giải phương trình:\(\frac{2x}{6x^2-x+3}+\frac{5x}{4x^2+5x+2}+\frac{x}{2x^2+3x+1}=\frac{1}{3}\)
b, \(\frac{1}{x+1}+\frac{2}{x+2}+\frac{1}{x+3}=\frac{1}{x+4}+\frac{2}{x+5}+\frac{1}{x+6}\)
c, \(x^2+\frac{9x^2}{\left(x+3\right)^2}=7\)
d,\(\frac{1}{x-1}+\frac{1}{x}+\frac{1}{x+1}+\frac{1}{x+2}+\frac{1}{x+3}=0\)
e,\(\frac{9x}{x^2-2x+3}=\frac{5x^2+9x+15}{x^2+3x+3}\)