The term, that should be added to (4$x^2$ + 8x) so that resulting expression be a perfect square, is

Answer : Option D

Explanation :

4$x^2$ + 8x = ($2x^2$) + 2 × 2x× 2 = $(2x+ 2)^2$– 4 So, we have to add up 4 to make it a perfect square

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