Question

Prove that -√7 is an irrational number...

Answer 1

Answer:

here is ur answer

Step-by-step explanation:

Root 7 () is an irrational number. It cannot be expressed as a number in the form p/q (where p and q are integers and q is not equal to 0).

HOPE IT HELPS YOU...

Answer 2

Answer:

let us assume that -√7 is an rational number

Step-by-step explanation:

-√7=a/b a& b are coprime number

-√7b=a

squaring on both sides

7b2=a2

7 divides a2

7 divides a

put a as 7c

7b2=49c2

b2=7c2

7 divides b2

7 divides b

a & b have same common factor

but this contradict the facts that a& b are coprime number

our assumptions is wrong

so -√7 is an irrational number