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 ( 83+ )
Otras preguntas
580 nm light shines on a double slit with d=0.000125 m. What is the angle of the third dark interference minimum (m=3)? (Remember, nano means 10^-9.) (Unit=deg)
Find the surface area of the prism. 6.5 feet, 6, 2.5 feet, 11 feet
PLS ANSWER FAST WILL GIVE BRAINLY!!! Use this sentence to start a descriptive paragraph: Scott opened the door and was surprised by what he saw. Use spatial ord
What was the most important progressive reform achieved under Presidents Roosevelt, Taft, or Wilson? Explain.
How do you make someone brainlyest????????????
How does the St. Lawrence help trade between Canada and other countries:
ways the influence of values on the choice of goals you set for yourself
You roll a die and then flip a coin. What is the probability, as a percent, of getting an even number on the die and then a head on the coin?
3) Write an explicit formula for the sequence: 45, 41, 37, 33
What sentence structure or type of sentence is this? Donald Trump is going to be our president.
