Question

1) 1,8x² + 54x + 405 = 0;​

Answer 1

Ответ:

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Объяснение:

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Answer 2

To solve the quadratic equation 1.8x² + 54x + 405 = 0, we can use the quadratic formula:

x = (-b ± √(b² - 4ac)) / (2a)

Here, a = 1.8, b = 54, and c = 405. Plugging in these values, we can calculate the solutions for x.

x = (-54 ± √(54² - 4 * 1.8 * 405)) / (2 * 1.8)

Simplifying further:

x = (-54 ± √(2916 - 2916)) / 3.6

x = (-54 ± √0) / 3.6

Since the discriminant (b² - 4ac) is zero, the equation has equal roots. The square root of zero is zero, so the equation simplifies to:

x = -54 / 3.6

x = -15

Therefore, the solution to the equation 1.8x² + 54x + 405 = 0 is x = -15.