Question 117447
{{{b^2-2bc+c}}} Start with the given expression


{{{4^2-2(4)(-1)-1}}} Plug in b=4 and c= -1 


{{{16-2(4)(-1)-1}}} Square 4



{{{16+8-1}}} Multiply



{{{23}}} Combine like terms



So {{{b^2-2bc+c=23}}} when  b=4 and c= -1