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 ( 87+ )
Otras preguntas
How have voting amendments changed American society?
If two states are selected at random from a group of 50 states, determine the number of possible outcomes if the group of states are selected with replacement
Find the value of x.
A student has computed that it takes an average (mean) of 17 minutes with a standard deviation of 3 minutes to drive from home, park the car, and walk to an ear
What word most likely means someone who takes advantage of circumstances
Large number of french-speaking africans and arab muslims live in what areas of the cities and towns of western europe?
Does eating while lying down make you fat
algebraic expression The difference of m and n
When electrons are removed from the outermost shell of a calcium atom the atom becomes?
You are able to stand on 1 foot with little difficulty, but you have trouble when you need to turn quickly to face a different direction. Which of the followi