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 ( 34+ )
Otras preguntas
WILL MARK BRAINLYST!This system of equations hasA. Exactly one solution B. No solution C. Infinitely many solutions
How doe the anwer to each multiplication problem compare to the anwer to it correponding diviion problem
The circumference (C) of a circle i 18 centimeter. Which formula can you ue to find the radiu (r) if you know that C =
Napoleaons continental system was
"Most of these zigaboos is so het up over yo' business till they liable to hurry theyself to Judgment to find out about you if they don't soon know"
A ingle replacement reaction i run in the lab between 45. 0g hydrofluoric acid,HF, and 125. 0g tin forming tin(ll) fluoride and another product
A random ample of 18 ize AA batterie for toy yield a mean of 2. 76 hour with tandard deviation, 1. 03 hour. (a) Find the critical value, t*, for a 99% CI. T* =
A truth erum ha the property that 90% of the guilty upect are properly judged while, of coure, 10% of the guilty upect are improperly found inno cent. On the ot
Why did James Madison support the Constitution? Responses It encouraged factions, which led to more debate and discussion. It kept the minority factions from
Which career pathways are part of the energy career cluster? select all that apply.