Question

Determinati care dintre elementele multimii{-2;-1;0;1,5;5}este solutie a ecuoatiei:a)3x-2=x-6;b)x+1/x=1;c) (x+2)(x-5)=0;d)x(x+1,5)=0;e)2x-1/x-2=2;f)x(x+1,5)(x-5)=0

Answer 1

2x=-4, x=-2
x+1=x , nu are solutie
(x+2)(x-5)=0; x=-2 sau 5
d) x=0
e) nu are solutie
g) x=0 sau 5