Question

qual o valor de V1+V298 sob V21+V121 a)3/8 b) 4/7 c) 3/4 d) 5/11

Answer 1

$\frac{\sqrt{1}+\sqrt{298}}{\sqrt{21}+\sqrt{121}}$

$\frac{1+\sqrt{298}}{\sqrt{21}+11}$

$\frac{(1+\sqrt{298})}{(\sqrt{21}+11)}.\frac{(\sqrt{21}-11)}{(\sqrt{21}-11)}$

$\frac{(1+\sqrt{298})}{21-121}$

$\frac{(1+\sqrt{298})}{-100}=-\frac{(1+\sqrt{298})}{100}$