Question

Bantuin dong blo and sist

Answer 1

(3 - √2) / (√5 + 7)  * (√5 - 7)/(√5 - 7)
= (3√5 - 21 - √10 + √14) / (5 - 49)
= (-1/44)(3√5 - 21 - √10 + √14)

(√3 + √2)/(√3 - √2)  * (√3 + √2)/(√3 + √2)
= (5 + 2√6)/(3 - 2)
= 5 + 2√6