Question

calcule o x de :
x ao quadrado e igual a 4x

Answer 1

x^2 = 4x
x^2-4x = 0
x(x-4) = 0
x' = 0
x-4=0
x'' = 4

Answer 2

x²=4x
x²-4x=0
x(x-4)=0

x'=0

x-4=0
x"=4

S{0 , 4}