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 ( 42+ )
Otras preguntas
Letter to Russian War Minister Alexander Kerensky from soldiers fighting in WW1, August 18th, 1917. Mr. War Misiter! We, soldiers from various regiments[...
A solution with a pH of 6 is a base
a²x2=100 What’s the answer to my question??
find the integral of sinx dx
Which of the following best describes a “fit” organism, according to natural selection theory? one that survives under adverse conditions one that survives in i
Marie has a small copy of her René Magritte’s famous painting ,the schoolmaster. her copy has dimensions 2“ x 1.5“ the scale Of the copy is 1 inch to 40 cm .fin
What is the slope of 0,3 4, 2
These figures are.... (Graph up top) (A.) Congruent but not similar. (B.) Congruent and similar. (C.) Similar but not congruent. (D.) Neither similar nor congru
does anyone have the clear quality of this picture!?!?!?!?!
|2x-1|=5 ... what is the solution set in interval notation?