(a + b)2 = a2 + b2. Right? “No, of course not,” you say. Or maybe you say “Yes, of course.” If you say yes, you’re making the same mistake that 42% of high-school students make. I just invented that statistic on the spot,… Read More ›

(a + b)2 = a2 + b2. Right? “No, of course not,” you say. Or maybe you say “Yes, of course.” If you say yes, you’re making the same mistake that 42% of high-school students make. I just invented that statistic on the spot,… Read More ›