AnaBelle111
AnaBelle111
05-09-2017
Mathematics
contestada
Please find the value(s) of x.
Respuesta :
liemonder
liemonder
05-09-2017
-2x^2+50x+40=0
-2*(x^2-25x-20)=0
x^2-25x-20=0
complete square:
x^2-25x-20+156.25^2=0+156.25
x^2-25x+156.25^2=20+156.25
(x-12.5)^2=176.25
x-12.5=+/-sqrt(176.5)
x=12.5+/-sqrt(176.5)
Answer Link
VER TODAS LAS RESPUESTAS ( 12+ )
Otras preguntas
Why do we call Ba(NO3)2 barium nitrate, but we call Fe(NO3)2 iron(II) nitrate?
The perimeter of a rectangular swimming pool is 154m.its length is 2m more than twice breadth . what are the length and breadth of the pool?
What is the international community's most common view on nuclear proliferation? A. The threat of global nuclear war is very high, so all nuclear weapons should
Identify the type of error in the sentence. If the sentence contains no error, select C. By calling every hour, my mother received Jamie's call
Line A: y = x − 2 Line B: y = 3x + 4 Which of the following shows the solution to the system of equations and explains why? (−3, −5), because the point does no
When solving problems, which of these is performed before the others? A. Multiplication B. Addition C. Exponents D. Subtraction
How many Polish officers died in Katyn forrest?
Mr. Parker's grocery bill before paying sales tax was $98. The final amount he had to pay was $103.88. What is the sales tax percentage that Mr. Parker paid?
There was a ray of hope for the prisoner means?
Democratic ideas and principles originated in: The New England Colonies Washington, D.C. Ancient Greece Philadelphia
