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 ( 55+ )
Otras preguntas
what best describes the orthocenter of a triangle
what is the molar volume of a gas at standard temperature and pressure
when you return an item, you might be charged a ______ fee.
Write an equation in point-slope form of the line having the given slope that contains the given point. m=4m=4, (2,5)
After fertilization cells as seen here divide repeatedly. The next step in the development of a multicellular organism would be? A: cytokinesis B: cleavage C
how can you tell that a piece of writing is in the first person? a. the writer uses the pronouns he, she, or it. b. the writer uses the pronouns they, them, or
I need help now plz!!
what is 150 mm expressed in diameters
In which sentence is the underlined word a preposition? A. Senator Young objected to the bill, (but) he didn't say why. B. She skipped her breakfast, (for) it
the price of a gallon of unleaded gas was $2.79 yesterday. today, the price rose to $2.85 . find the percentage increase. round your answer to the nearest tenth