Оберіть правильний варіант 1 бал
a3 + b3 = (a + b)(a2 – ab + b2)
a3 + b3 = (a + b)(a2 – 2ab + b2)
a3 + b3 = (a + b)(a2 + 2ab + b2)
a3 + b3 = (a + b)(a2 + ab + b2)
плз хелп 2 раз пишу
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