Question

please tell this one​

Answer 1

Answer:

1.root 5 +root 3.. is conjugate pair 2.15×8=120..root get cancelled...

Answer 2

1)the conjugate pair of √5-√3 is √5+√3

2)5√8×3√8=5×3(√8)²=15×8=120

3)√98/7=√14×√7/7=√14/√7=√(14/7)=√2

that's it I don't know 4th question sorry if you like mark as brainliest answer