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 ( 45+ )
Otras preguntas
during the decomposition of 34 gr ammonia into nitrogen and hydrogen 92 KJ are absorbed. How many grams of ammonia are decomposed when 184 KJ are absorbed? wr
What part of the reproductive system is highlighted in the picture attached? i don’t understand
What is the length of the hypotenuse of the right triangle with coordinates:(-2, -1), (-6,5), and (4, 3)?
how do I write an equation as a multiple of a unit fraction using 3×3/7
if a coin is flipped three times the probability of getting heads all three times
Find bc if your answer is not an integer, leave it in simplest radical form
the following table represents the probability distribution of the number of vacations X taken last year for a randomly chosen family. compute the standard devi
A water dispenser has a capacity of 20,000 milliliters. Use the facts to find how much this is in liters .
A set of data has a normal distribution with a mean of 49 and a standard devſation of 7. Find the percent of data within the following intervalless than 49The p
Use the GCF and the Distributive Property to find the sum. Question Help 26 + 39 Write each number as a product using the GCF as a factor, and apply the Distrib