Question

Sabe-se que o ponto (3, 2m - 16) pertence ao eixo das abscissas. Então a raiz cúbica de m é​

Answer 1

$\large\boxed{\begin{array}{l}\rm um\,ponto\,pertence\,ao\,eixo\,das\,abcissas\\\rm quando\,sua\,ordenada\,\acute e\,igual\,a\,zero.\\\rm A(3,2m-16)\\\rm como\,A\,pertence\,ao\,eixo\,das\,abcissas\\\rm ent\tilde ao\\\rm 2m-16=0\\\rm 2m=16\\\rm m=\dfrac{16}{2}\\\\\rm m=8\\\rm \sqrt[\rm3]{\rm m}=\sqrt[\rm3]{\rm 8}=2\end{array}}$