Prove that 7 is an irrational number. Hence show that 5 + 2 root 7 is also an irrational

number.

Question

Prove that 7 is an irrational number. Hence show that 5 + 2 root 7  is also an irrational   number.​

Remi · Answer

Answer:   sqrt7 is irrational  ... 2 is rational and a rational*irrational is irrational,  hence 2sqrt7 is irrational.... consequently 5+2sqrt7 is irrational     hope it helps

Eloise

Shimla’s temperature=(-7/2)°C ; Dalhousie’s temperature= (-5)°C; Manali’s temperature= (-8/5)°C. Arrange them in ascending order.<

The 17th term of an AP exceeds its 10th term by 7. Find the common difference

1 thought on “Prove that 7 is an irrational number. Hence show that 5 + 2 root 7 is also an irrational <br /><br />number.”

Leave a Comment Cancel reply

Prove that 7 is an irrational number. Hence show that 5 + 2 root 7 is also an irrational number.​