None does, since there is no polynomial below.
What value, in place of the question mark, makes the polynomial below a perfect square trinomial?x2 + 12x+ ?
64
-12
144
48
121
64
6.25
49
49
38
To make the polynomial ( x^2 - 28x + ? ) a perfect square trinomial, we need to find the value that completes the square. The formula for a perfect square trinomial is ( (x - a)^2 = x^2 - 2ax + a^2 ). Here, ( a ) is half of the coefficient of ( x ), which is ( -28 ). Thus, ( a = 14 ), and we need ( a^2 = 196 ). Therefore, the value in place of the question mark is ( 196 ).