Question

relacione o denominador
a)
$\frac{1}{3 + \sqrt{2} }$

b)
$\frac{7}{ \sqrt{60+} 5}$

Answer 1

a)

1(3-√2)/(3+√2)(3-√2)=

(3-√2)/[3²-(√2)²]=

(3-√2)/[9-2]=

(3-√2)/7

b)

7/√65=

7√65/(√65)²=

7√65/65