Question

cần gấp 

Answer 1

a: 2x-16=0

=>x-8=0

=>x=8

b: 1/2x+4=0

=>x+8=0

=>x=-8

c: 3x^2-6=0

=>3x^2=6

=>x^2=2

=>\(x=\pm\sqrt{2}\)

d: 16-9x^2=0

=>(4-3x)(4+3x)=0

=>x=4/3 hoặc x=-4/3

e: 3x^2+4x=0

=>x(3x+4)=0

=>x=0 hoặc x=-4/3

f: x^3-27=0

=>x^3=27

=>x=3

g: x^3+3x=0

=>x(x^2+3)=0

=>x=0

h: (x-1)^2-100=0

=>(x-1-10)(x-1+10)=0

=>(x-11)(x+9)=0

=>x=11 hoặc x=-9