Question

А) 15х2 – 14х +21 = 0 а=15 в = -14 и с = 21

Answer 1

Ответ:

Д=(-14)²-4×15×21=-1064<0

=X

Answer 2

To solve the quadratic equation 15x^2 - 14x + 21 = 0, you can use the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a)

Here, a = 15, b = -14, and c = 21. Plugging these values into the formula, we get:

x = (-(-14) ± √((-14)^2 - 4 * 15 * 21)) / (2 * 15) = (14 ± √(196 - 1260)) / 30 = (14 ± √(-1064)) / 30

Since the term inside the square root is negative, the quadratic equation has no real solutions.