Question

If a=1,b=2,c=5, find the value of the expression $a^2{b}^4{c}^6-1$.

Answer 1

Let us substitute $a=1,b=2$ and $c=5$ in the given expression $a^2{b}^4{c}^6-1$ as shown below:

$a^2{b}^4{c}^6-1=(1{)}^2\times (2{)}^4\times (5{)}^6-1=(1\times 16\times 15625)-1=250000-1=249999$

Hence, $a^2{b}^4{c}^6-1=249999$ if $a=1,b=2$ and $c=5$.