Вопрос школьника по предмету Алгебра
используйте формулу сокращенного умножения,вычислите
99 в квадрате Б)202 в квадрате
Ответ учителя по предмету Алгебра
1)
99^2 = (100 — 1)^2 = 100*100 — 2*1*100 + 1*1 = 10000 — 200 + 1 = 9801
2)
202^2 = (200 + 2)^2 = 200*200 + 2*200*2 + 2*2 = 40000 + 800 + 4 = 40804
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