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Webb[{"kind":"Article","id":"GDVB353LQ.1","pageId":"G0AB34ITL.1","layoutDeskCont":"TH_Regional","headline":"Online platforms must take down PIB-flagged ‘fake news ... Webb21 okt. 2015 · We start with our equations: $$P = 2a + 2b$$ $$A = ab$$ Now, you set them equal. $$2a + 2b = ab$$ $$ab - 2a - 2b = 0$$ Now, we use Simon's Favorite Factoring … http://techiemathteacher.com/2014/05/01/simons-favorite-factoring-trick/ flycam c5