Question 807343
{{{b^2-4b(2x+y)-5x}}}


{{{4^2-4*4(2x+y)-5x}}} Plug in b = 4


{{{4^2-4*4(2*3+y)-5*3}}} Plug in x = 3


{{{4^2-4*4(2*3+(-8))-5*3}}} Plug in y = -8


{{{16-16(6-8)-15}}}


{{{16-16(-2)-15}}}


{{{16+32-15}}}


{{{33}}}



So, {{{b^2-4b(2x+y)-5x=33}}} when b = 4, x = 3, y = -8