Question

Racionalize os denominadores.
a) √7 √3 =​

Answer 1

$\Large\boxed{\begin{array}{l}\sf\dfrac{\sqrt{7}}{\sqrt{3}}\cdot\dfrac{\sqrt{3}}{\sqrt{3}}=\dfrac{\sqrt{21}}{\sqrt{3^2}}=\dfrac{\sqrt{21}}{3}\blue{\checkmark}\end{array}}$