Question

(√19-7)^(2)+14√19 ^(2) квадрат

Answer 1

Ответ:

68

Пошаговое объяснение:

Раскрываем квадрат суммы.

19 - 14√19 + 49 + 14√19 = 19 + 49 = 68

Answer 2

Let's simplify the expression step by step:

1. (√19 - 7)² First, expand the square: (√19 - 7)² = (√19 - 7) * (√19 - 7) Using the formula (a - b)² = a² - 2ab + b²: (√19 - 7)² = (√19)² - 2 * (√19) * 7 + 7² (√19 - 7)² = 19 - 2√19 * 7 + 49 (√19 - 7)² = 68 - 14√19

2. 14√19² √19² = 19, so: 14√19² = 14 * 19 = 266

Now, let's add the two simplified expressions together: (√19 - 7)² + 14√19² = (68 - 14√19) + 266

Finally, combine like terms: (68 - 14√19) + 266 = 334 - 14√19

So the simplified expression is 334 - 14√19.