Question

m²-1 is divided by 8 ,if m is​

Answer 1

Step-by-step explanation:

m² - 1 = 8

m²= 8+1

m² = 9

m² = 3²

m = 3 (ans)

hope it's helpful to you

Answer 2

Step-by-step explanation:

Given that :-

m²-1 is divided by 8

If m²-1 is divided by 8 completely, then

m²-1 is the multiple of 8

=>m²-1=multiple of 8

=>m²-1=8,16,....

Suppose,

m²-1=8

=>m²=8+1

=>m²=9

=>m=±√9

=>m=±3

The least possible value of m =±3

Check:-

If m=3 then m²-1=3²-1=9-1=8 is divisible by 8

If m=-3 then m²-1=(-3)²-1=9-1=8 is

divisible by 8.