Question

anh/chị làm giúp em với ạ

Answer 1

a: =>2x^3-2x^2+2x-x^2+x-1+3x^2-2x^3=2

=>3x-1=2

=>x=1

b: \(\Leftrightarrow\left(3x-6\right)\left(-4x+1\right)+4\left(3x^2+7x+2\right)=24\)

=>\(-12x^2+3x+24x-6+12x^2+28x+8=28\)

=>55x+2=28

=>55x=26

=>x=26/55

c: \(\Leftrightarrow\left(x^2+3x+2\right)\left(x+3\right)-x^3-8x^2-16x=6\)

=>\(x^3+3x^2+3x^2+9x+2x+6-x^3-8x^2-16x=6\)

=>-2x^2-5x=0

=>x=0 hoặc x=-5/2

d: =>x^3+2x^2+4x+x^2+2x+4-x^3-3x^2+8=0

=>6x+12=0

=>x=-2