The result means that Arsenal climb to 10th, but more importantly they cut the gap to fourth to six points. Newcastle, meanwhile, drop to 13th but they'll be relatively unconcerned with the gap to the relegation zone remaining at seven points.
Arsenal turned on the style after a quiet first half to hammer Newcastle 4-0 and secure a much-needed morale-boosting victory. Aubameyang finally opening the scoring with a neat header from a Pepe cross and Arsenal didn't look back from there. Pepe quickly doubled their lead with a smart finish after delightful work from Saka, before two goals from Ozil and Lacazette in stoppage time added gloss to a superb performance.