Question

3) Simplificar a) (7+√77-√7). 2²392-3 55 (5+√5X5-√5X2√2)²​

Answer 1

$\frac{(7+\sqrt{7})(7-\sqrt{7})2^{2}2^{9}2^{-3}}{5^{5}(5+\sqrt{5} )(2\sqrt{2})^2 } = \frac{(49 - 7)4*512*2^{-3}}{3125*(5+\sqrt{5} )4*2} = \frac{(49 - 7)2048*2^{-3}}{25000*(5+\sqrt{5} )} = \frac{(49 - 7)256}{125000 + 25000\sqrt{5} } = \frac{10752}{125000 + 55902 } = \frac{10752}{180902 }$