Question

Answer 1

a: =>2x^2-10x-3x-2x^2=26

=>-13x=26

=>x=-2

d: =>(x+5)(2-x)=0

=>x=2 hoặc x=-5

h =>x^2-6x+9=0

=>(x-3)^2=0

=>x=3

i: =>(x-3)(x+2)=0

=>x=3 hoặc x=-2

g: =>3x(x^2-16)=0

=>x(x-4)(x+4)=0

=>\(x\in\left\{0;4;-4\right\}\)

e: =>(2x-3-x-5)(2x-3+x+5)=0

=>(x-8)(3x+2)=0

=>x=-2/3 hoặc x=8