LukeNuno
LukeNuno
03-12-2014
Mathematics
contestada
Solve for x:
x2 + 8x = -1
Respuesta :
konrad509
konrad509
03-12-2014
[tex]x^2+8x=-1\\ x^2+8x+16-16=-1\\ (x+4)^2=15\\ x+4=\sqrt{15} \vee x+4=-\sqrt{15}\\ x=-4+\sqrt{15} \vee x=-4-\sqrt{15}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 58+ )
Otras preguntas
What changes were made in Utah during World War 1?
por que os vulcões e os terremotos são mais freqüentes em certas regiões do planeta
Which expressions, when evaluated with x = –9, are negative in value? Choose all answers that are correct. A. –2x – 8 B. –26 – 2x C. 35 + 3x D. –3x
Which fraction is equivalent to 2/7
the bases of a softball field are 60 feet apart. How far apart is home plate from second base?
which of the following did not trigger Haiti's fight for independence
72 - (blank) + 20 = 70 what number is the blank
what were National and State Bank policies in the 1830's contributed to?
what is 3\13 times 143 equal
What is the prefix of active
