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Joseph101
Joseph101 Joseph101
  • 13-04-2015
  • Mathematics
Answered

x^2+8x+c

Perfect square Trinomial

Verified Answer :

belcatya
belcatya belcatya
  • 13-04-2015

we know square of the sum formula
(a+b)²=a²+2ab+b²
so we need
x²+8x+c=(x²+24x+4²)-16+c=(x+4)²+c-16,
so for full square we need  c-16=0
c=16
Answer: c=16

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