Question 90746
Question:


Evaluate b2 – 2bc + c2 if b = 3 and c = –2.


Answer


if b = 3 and c = –2, 
{{{b^2}}}– 2bc + {{{c^2 }}} = {{{3^2}}} – 2*3*(-2) + {{{(-2)^2 }}}



==> = 9 + 12 + 4



==> = 25



so the value is 25.



Hope you found the explanation useful.


Regards.


Praseena.