Question

-х^2+6х-70＞срочнооооо

Answer 1

Найти х?

а=-1, b=6, c=-70
D=b^2-4ac
D=6^2-4*(-1)*(-70)=36-4*70=36-280=-244<0=> корней нет

Answer 2

To solve the inequality -x^2 + 6x - 70 > 0, we'll follow these steps:

Step 1: Set the inequality to zero to find critical points: -x^2 + 6x - 70 = 0

Step 2: Find the critical points (where the inequality might change): To find the roots of the quadratic equation -x^2 + 6x - 70 = 0, we can use the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / 2a

where a = -1, b = 6, and c = -70

x = (-(6) ± √((6)^2 - 4(-1)(-70))) / 2(-1) x = (-6 ± √(36 - 280)) / -2 x = (-6 ± √(-244)) / -2 x = (-6 ± 2i√61) / -2

The roots are complex numbers because the discriminant (b^2 - 4ac) is negative.

Step 3: Analyze the inequality using critical points: Since the coefficient of x^2 is negative (-1), the parabola opens downward. The inequality -x^2 + 6x - 70 > 0 means that the quadratic expression is positive between the two complex roots.

Step 4: Final Answer: The solution to the inequality -x^2 + 6x - 70 > 0 is all x values between the two complex roots, which are (-6 + 2i√61) / -2 and (-6 - 2i√61) / -2.

Since these roots are complex numbers and cannot be compared directly on the real number line, the inequality doesn't have a simple real number solution. If you need further assistance or if the inequality was meant to be different, please let me know!