Question

if m-1/m=41,find
I. m*2+1/m*2
2.m*4+1/m*4
3.m*2-1/m*2..​

Answer 1

Answer:

1. m*2+1/m*2≈82

2. m*4+1/m*4≈164

3. m*2-1/m*2=81.98

Step-by-step explanation:

$m-\frac{1}{m} =41$

$\frac{m^{2}-1 }{m} =41$

$\ m^{2}-1 } =41m$

$\ m^{2}-41m-1=0$

$m=\frac{41+\sqrt[2](41^{2} -4*1*1 )}{2*1} or m=\frac{41-\sqrt[2](41^{2} -4*1*1) }{2*1}$

$m=\frac{41+\ 41}{2} or m=\frac{41-41 }{2}$

$m=41 or m=0$

⇒1. m*2+1/m*2≈82

2. m*4+1/m*4≈164

3. m*2-1/m*2=81.98