// Angles in the same segment are equal.
2x² - 2 = 10x - 2
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Solve x :
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2x² - 2 = 10x - 2
2x² - 10x = 0
2x(x - 5) = 0
2x = 0 or x - 5 = 0
x = 0 or x = 5
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Find ∠CED :
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When x = 0
2(o)² - 2 = -2 (rejected, angle cannot be negative)
When x = 5
2(5)² - 2 = 48°
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Answer : ∠CED = 48°
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