Question

resolva as equações incompletas em c: x2-6x=0 e 5x2-35x=0

Answer 1

$\mathtt{x^2 -6x = 0} \\ \mathtt{x(x - 6) = 0} \\ \mathtt{x' = 0} \\ \\ \mathtt{x - 6 = 0} \\ \mathtt{x = 6} \\ \\ \boxed{\mathtt{S\{0~~ ,~~ 6\}}} \\ \\ \\ \mathtt{5x^2-35x = 0} \\ \mathtt{x(5x - 35) = 0 } \\ \mathtt{x'= 0} \\ \\ \mathtt{5x - 35 = 0} \\ \mathtt{5x = 35} \\ \mathtt{x = 35 \div 5 }\\ \mathtt{x = 7 } \\ \\ \boxed{\mathtt{S\{0~~,~~7\}}}$