marlisamoore
marlisamoore
01-09-2017
Mathematics
contestada
can someone help me with this question
Respuesta :
Banabanana
Banabanana
01-09-2017
[tex] x^{2} +2x-5=0 \\ D=b^2-4ac=2^2-4*1*(-5)=4+20=24 \\ x_{1,2}= \frac{-bб \sqrt{D} }{2a}= \frac{-2б \sqrt{24} }{2}=\frac{-2б 2\sqrt{6} }{2}= \frac{-2}{2}б \frac{2 \sqrt{6} }{2} =-1б \sqrt{6} [/tex]
Answer:
B. x = -1 - √6
C. x = -1 + √6
Answer Link
VER TODAS LAS RESPUESTAS ( 34+ )
Otras preguntas
Write good insulators around the home
When 70,000 is written as 7.0 10^{n} what is the value of n ? Can you please explain with some details?
Indicate which pattern of evolution is shown by the many species of finches on the Galápagos Islands.
In Latin America, what did land reform accomplish?
The areas of two circles are 36(pi) and 64(pi). What is hte ratio of the diameters? of the circumferences?
what kind of symbiotic relationship is showm between Dori and Marlin
How does Macbeth persuade the murderers to help him? He tells the murderers that it was really Banquo who did some things they thought Macbeth had done to harm
which number is 100 less than 38 tens
When 70,000 is written as 7.0 10^{n} what is the value of n ? Can you please explain with some details?
Can you explain 3x+4/5=7/10. Solve