Question

2. Nu este solutie a ecuației (x - 1)(x + 2)(x - 2) = 0
p)2
q)1
r)-2
s)-1
​

Answer 1

X=2

(2-1)(2+2)(2-2)=0

1*4*0=0

Adevarat

X=1

(1-1)(1+2)(1-2)=0

0*3*-1=0

Adevarat

X=-2

(-2-1)(-2+2)(-2-2)=0

-3*0*-4=0

Adevarat

X=-1

(-1-1)(-1+2)(-1-2)=0

-2*1*-3=0

Fals

Raspuns:s)-1