Question

na equação (x+7)*(-x+11)=0 preciso resolver por partes?

Answer 1

$(x+7)*(-x+11)=0 \\ \left \{ {{x+7=0} \atop {-x+11=0}} \right. \\ \left \{ {{x=-7} \atop {-x+11=0}} \right. \\ \left \{ {{x=-7} \atop {-x=-11}} \right. \\ \left \{ {{x=-7} \atop {x=11}} \right. \\ x=[-7,11 ]$