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X^2+8x+c Perfect square Trinomial
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X^2+8x+c
Perfect square Trinomial

User Ben Sewards
by
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1 Answer

1 vote
we know square of the sum formula
(a+b)²=a²+2ab+b²
so we need
x²+8x+c=(x²+2*4*x+4²)-16+c=(x+4)²+c-16,
so for full square we need c-16=0
c=16
Answer: c=16
User Theo Cerutti
by
7.7k points
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