Question

pls answer it fast as soon as possible​

Answer 1

Answer:

ans:

1.(√5+√2)²=5+2+2(√5)(√2)

=7+√10

2.√45-3√20+4√5=3(√5)-6(√5)+4(√5)

=√5(3-6+4)

=√5

5.ans:a=1058/(391+68√15)

b=184/(391+68√15)