Q. 485.0( 1 Vote )


Using factorizat

Answer :

, (x ≠ 0)
x 2 + 4 = - 4x
x 2 + 4x + 4 = 0
x 2 + 2x + 2x + 4 = 0
x(x + 2) + 2(x + 2) = 0
(x + 2)(x + 2) = 0
x = - 2 or x = - 2.

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