Question

how to do it it's urgent if answered in
10 minutes will be marked as brainliest

Answer 1

seven square minus under root 7 square which is equals to 49 - 7 as root 7 into root 7 equals to 7 therefore answer is 42 hope it will help you

Answer 2

Solve it by a^2-b^2 identity
and you will get 49-7=42
hence 42 is rational
HOPE THIS HELPS YOU