Question

resolva:
a) x(x+1)=0

b) 2x(x-5)=0

c) (x+3) (x-1)=0​

Answer 1

a) x(x+1)=0 ==> x= 0

x+1=0 => x=-1

b) 2x(x-5)=0 ==> x= 0

(x-5)=0 => x= 5

c) (x+3) (x-1)=0

x+3=0 => x'= -3

x-1=0 => x" = 1