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B
x > y
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C
x ≤ y
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D
x < y
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E
x = y or no relation can be established between x and y
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Solution
The correct option is D x < y Equation I ⇒x2+4x+4=0 ⇒x2+2x+2x+4=0 ⇒x(x+2)+2(x+2)=0 ⇒(x+2)2=0 ⇒x=−2 Equation II y2−8y+16=0 ⇒y2−4y−4y+16=0 ⇒y(y+4)−4(y−4)=0 ⇒(y−4)(y−4)=0 ⇒(y−4)2=0 ∴y=4 Hence, x < y