Question

For what value of c are the factors of (x2 - cx + 81/16) the same?
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Answer 1

ANSWER: a = 1

b = c

c = 81/16

Now

b2-4ac=0

put the values

c2-4 X 1 X 81/16=0

c2=81/4 => c=square root of 81/4=> c=9/2 => c=4.5