The value of c should be 16 if the trinomial has to be a perfect square.
What is a Trinomial?
A trinomial is a polynomial with three terms, each term has a plus or minus sign in between.
The trinomial is
x²+8x+c
To make it a perfect square, the expression has to be converted in the form of ( x+a)² = x²+2ax+a²
x² +2 * 4x +16 -16 = 0.
(x+4)² = 16
c = 16
Therefore, to make the trinomial a perfect square, the value of c should be 16.
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