Manzur278
Manzur278
06-07-2015
Mathematics
contestada
Solve x2 - 7x = -13
Respuesta :
Benjamin16
Benjamin16
10-07-2015
[tex]x^{2}-7x=-13 \\ \\ x^{2}-7x+13=0 \\ \\ \Delta=(-7)^{2}-4*1*13=49-52=-3 \implies x\not\in R \\ \\ \sqrt{\Delta} =i \sqrt{3} \\ \\ x_{1}= \frac{7-i \sqrt{3} }{2} \\ \\ x_{2}= \frac{7+i \sqrt{3} }{2} [/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 91+ )
Otras preguntas
Gunpowder technology originated in a. China. b. Persia. c. Korea. d. Europe.
Members of a society have a variety of jobs. Some act as farmers, while others work as masons, artisans, and priests. Which of the following is necessary for th
19. A material with a shape that remains unchanged when it is moved from one container to another is a(n)________
why were mesoptamians fortunate to live in the fertile crescent
There are ten landforms regions in Mississippi. a. Which two in western Mississippi? b. Which five are located in northern Mississippi? c. Which three are
In what year did the February and October revolutions occur in Russia?
what is the circumference of a circle with a diameter of 45 centimeters
which category of drugs does not increase your risk of contracting HIV through infected needles? A. Narcotics B. Inhalants C. Stimulants
In the early colonial period,which of the following was the cash crop of virginia
explain how you would find the length of one side of a square if the area is 16 square units
