Question

If a-1/a=5,find the value pf a^2+1/a^2​

Answer 1

Answer:

16.0625

Step-by-step explanation:

$\frac{a-1}{a}=5$

$a-1=5*a$

$a-1=5a$

$-5a+a-1=0$

$-5a+a=1$

$-4a=1$

$a=\frac{1}{-4}$

$a=-0.25$

Substituting the values:

$-0.25^{2} +\frac{1}{-0.25^{2}}$

$0.0625+\frac{1}{0.0625}$

$0.0625+16$

$<u>16.0625</u>$