What is the following product?

(5 startroot 2 endroot minus 4 startroot 3 endroot) (5 startroot 2 endroot minus 4 startroot 3 endroot)
–2
2
22 – 40 startroot 6 endroot
98 – 41 startroot 6 endroot

98 - 40√6

Step-by-step explanation:

We have to simplify the following product :

.

Now,

=

=  

{Since we know the identity (a - b)² = a² - 2ab + b² }

= 50 - 40√6 + 48

= 98 - 40√6 (Answer)

which expression represents the approximate length of bc?

step-by-step explanation:

sites: