Question

(7x+5)(7x-5)-5(x-1)(X+4)+(3x-1)²

Answer 1

Ответ:

Смотри решение на фото выше

Answer 2

To simplify the expression (7x+5)(7x-5)-5(x-1)(x+4)+(3x-1)², follow these steps:

1. Start by expanding each term within the parentheses:

   (7x + 5)(7x - 5) = 49x² - 25

   -5(x - 1)(x + 4) = -5(x² + 4x - x - 4) = -5(x² + 3x - 4) = -5x² - 15x + 20

   (3x - 1)² = (3x - 1)(3x - 1) = 9x² - 3x - 3x + 1 = 9x² - 6x + 1

2. Now, you can simplify the entire expression by combining like terms:

   49x² - 25 - 5x² - 15x + 20 + 9x² - 6x + 1

3. Combine like terms:

   (49x² - 5x² + 9x²) + (-25 - 15x + 20 - 6x + 1)

4. Add and subtract like terms within each set of parentheses:

   53x² - 53x - 4

So, the simplified expression is:

53x² - 53x - 4