(x + 3)² = x² + 2 * x * 3 + 3² = x² + 6x + 9
(4 - y)² = 4² - 2 * 4 * y + y² = 16 - 8y + y²
(a + b/2)² = a² + 2 * a * (b/2) + (b/2)² = a² + ab + b²/4
(2m - 5)² = (2m)² - 2 * 2m * 5 + 5² = 4m² - 20m + 25
(7a + 6b)² = (7a)² + 2 * 7a * 6b + (6b)² = 49a² + 84ab + 36b²
(x - 4)² - 6 = x² - 2 * x * 4 + 4² - 6 = x² - 8x + 16 - 6 = x² - 8x + 10
10a + (a - 5)² = 10a + a² - 2 * a * 5 + 5² = 10a + a² - 10a + 25 = a² + 25
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(3m - 7n)² – 9m(n – 5n) = (3m)² - 2 * 3m * 7n + (7n)² - 9mn + 45mn = 9m² - 42mn + 49n² - 9mn + 45mn = 9m² + 49n² + 6mn
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(x + 5)² - (x – 1)² = 48
x² + 10x + 25 - (x² - 2x + 1) = 48
x² + 10x + 25 - x² + 2x - 1 = 48
12x + 24 = 48
12x = 24
x = 2
(* + 5)² = x² + * + 25 => (x + 5)² = x² + 10x + 25
(6a⁵ + *)² = * + * + 49b⁴ => (6a⁵ + 7b²)² = 36a¹⁰ + 84a⁵b² + 49b⁴
(* - *)² = 9x⁶ - * + 100x⁴y¹⁰ => (3x³ - 10x²y⁵)² = 9x⁶ - 60x⁵y⁵ + 100x⁴y¹⁰
(5b² - *)² = * - 30a²b³ + * => (5b² - 3a²b)² = 25b⁴ - 30a²b³ + 9a⁴b²
Ответ: смотри выше