Question

If n square- 1 over m is equal to 4
Express n in terms of m
find n when m is 12​

Answer 1

n=√(4m+1) , 7

Explanation:

According to statement

( n²-1 )÷m=4

∴n²-1=4m

⇒n²=4m+1

⇒n=√(4m+1)… … … … 1

If m=12

put the value of m in 1 equation

n=√(4×12+1)

=√49=7