Value of C that make Trinomial perfect square...Thanks you guys ROCK!?

Please show work thanks a ton!





A. x^2 + 12x +C





B. x^2 - 5x + C





C. x^2+ 3/8x + C

Value of C that make Trinomial perfect square...Thanks you guys ROCK!?
(x+b)^2 = x^2 + 2*b*x + b^2.





Now you have to choose b such that it matches your equation.





1. 2* b = 12 =%26gt; b = 6


=%26gt; b^2 = 36


So your equation becomes


x^2 +12x + 36 = (x+6)^2





Similarly you can do for 2 and 3.
Reply:A. x^2 + 12x +C





C= (b/2)²


C = (12/2)² = 36





x² + 12x + 36 = (x+6)²





B. x^2 - 5x + C


C = (-5/2)² = 25/4





x² -5x + 25/4 = (x-5/2)²





C. x^2+ 3/8x + C


C = (3/8*1/2)² = 9/256





x^2+ 3/8x + 9/256 = (x+3/16)²