Question

precisoo pra agora
ajudeeem

Answer 1

a) x²=121
x= √121
→ x = 11


b) 3x²=243
x²=243/3
x²=81
x=√81
→ x = 9


c) 2x²=6x
x²=6x/2
x²=3x
x²-3x=0
x.(x-3)=0
→x1=0
x2= x-3=0
→x2= 3



d) 1/3x²-2x=0
x.(1/3x-2)=0

→ x1=0
x2= 1/3x-2=0 x 3
x2= x-6=0
→x2= 6




Espero ter ajudado!