a - b = 6;
ab = 5;
(a + b)^2 = a^2 + 2ab + b^2;
(a - b)^2 = 6^2;
(a - b)^2 = 36;
a^2 - 2ab + b^2 = 36;
a^2 + b^2 = 36 + 2ab;
2ab = 5 * 2;
2ab = 10;
(a + b)^2 = a^2 + 2ab + b^2 = 36 + 10 + 10 = 56.
Пошаговое объяснение:
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Answers & Comments
a - b = 6;
ab = 5;
(a + b)^2 = a^2 + 2ab + b^2;
(a - b)^2 = 6^2;
(a - b)^2 = 36;
a^2 - 2ab + b^2 = 36;
a^2 + b^2 = 36 + 2ab;
2ab = 5 * 2;
2ab = 10;
(a + b)^2 = a^2 + 2ab + b^2 = 36 + 10 + 10 = 56.
Пошаговое объяснение: