Question

Cần gấp bài 7 ạ!

Answer 1

a: A(x)=0

=>2x-1=0

=>x=1/2

b: B(x)=0

=>(4x-3)(x+5)=0

=>x=3/4 hoặc x=-5

c: P(x)=0

=>3-x^2=0

=>x^2=3

=>\(x=\pm\sqrt{3}\)

d: M(x)=0

=>9-4x^2=0

=>4x^2=9

=>x=3/2 hoặc x=-3/2

e: N(a)=0

=>2a^2-3a=0

=>a=0; a=3/2