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Question
Write the following sets in the roaster form.
C = {x : x2 + 7x – 8 = 0, x ∈ R}
Solution
x 2 + 7x – 8 = 0 or (x + 8)(x – 1)
= 0 giving x
= – 8 or x = 1
Thus, C = {– 8, 1}
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