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garik1379 [7]
3 years ago
13

What is the value of c such that x^2+14x+c is a perfect-square trinomial?

Mathematics
1 answer:
polet [3.4K]3 years ago
4 0

Answer: 49

Step-by-step explanation:

a=1 ,b=14, c=?

b^2-4ac =0

(14)^2-4(1)(c)=0

196-4c=0

196=4c

c=49

Check:

(x)^2+2(x)(7)+(7)^2

x^2+14x+49

(x+7)^2  

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