Tìm x, biết

a,\(\left(x^2+2x\right)^2-2x^2-4x=\)3

b,\(\left(x+\frac{1}{2}\right)^2-\left(x+\frac{1}{2}\right)\left(x+6\right)=8\)

c,\(\left(x+3\right)^2-\left(x+2\right)\left(x-2\right)=4x+17\)

d,\(\left(x-3\right)\left(x^2+3x+9\right)-x\left(x^2-4\right)=1\)

e,\(3x^2+7x=10\)

g,\(\left(3x+5\right)\left(2x-1\right)-6x\left(x+2\right)=x\)

h,\(2\left(x+3\right)-x^2-3x=0\)

i,\(x^3-5x^2-14x=0\)

Tìm x, biết:

a, \(2x^3-x^2+2x-1=\)0

b, \(2018x-1+2019x\left(1-2018x\right)=0\)

c,\(\left(x+2\right)^3-x^2\left(x-6\right)-4=0\)

d,\(6x^2-\left(2x-3\right)\left(3x+2\right)=1\)

e,\(\left(x+1\right)^3-\left(x-1\right)\left(x^2+x+1\right)-2=0\)

g,\(7x^2+2x=0\)

h,\(x\left(x+4\right)-x^2-6x=10\)

i,\(x\left(x-1\right)+2x-2=0\)

k,\(\left(3x-1\right)^2-\left(x+5\right)^2=0\)

l,\(x\left(2x-3\right)-2\left(3-2x\right)=0\)

Các bn ơi giúp mik với mik cần gấp lắm

1/ Tìm x , y và z :

a) \(\frac{x+1}{2}=\frac{y+3}{4}=\frac{z+5}{6}\)và 2x + 3y + 4z = 9

b/ \(\frac{x}{2}=\frac{y}{3};\frac{y}{2}=\frac{z}{5}\)và x + y + z = 50

c/ \(\frac{x}{2}=\frac{y}{5};\frac{y}{3}=\frac{z}{2}\)và 2x + 3y - 4z = 34

d / 3x = 4y ; 2x = 5z và x + y - z = 58

e/ 6x = 4y = 3z và x + y - z = 18