X square + 37 X + 342 = 0
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=> x² + 37x + 342 = 0
=> x² + 18x + 19x + 342 = 0
=> x ( x + 18 ) + 19 ( x + 18 ) = 0
=> ( x + 19 ) ( x + 18 ) = 0
=> x + 19 = 0 or x + 18 =0
=> x = -19 or x = -18
Therefore x = -18,-19
=> x² + 18x + 19x + 342 = 0
=> x ( x + 18 ) + 19 ( x + 18 ) = 0
=> ( x + 19 ) ( x + 18 ) = 0
=> x + 19 = 0 or x + 18 =0
=> x = -19 or x = -18
Therefore x = -18,-19
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