Question

if m=x+1/x and n=x-1/x then m square -n square

Answer 1

Answer:

Use formula a²-b²=(a+b)(a-b)

So we have m²-n²=(1+1/x)²-(x-1/x)²

=(x+1/x+x-1/x)(x+1/x-x+1/x)

=2x × 2/x

=4

Answer 2

Answer:

so,we have m²-n²=(1+1/X)²-(X-1/X)²

=(X-1X+X-1X)(X+1×-×-×1×)

=2X×2X

=4