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 ( 16+ )
Otras preguntas
Name the two lines and the transversal that form each pair of angles
Why is India considered a subcontinent
If you know two points on a line, how can you find the rate of change of the variables being graphed?
Mr Jones has 20,000 to invest. He invests part at 6% and part at 7%, if hr earns 1,280 in interest after 1 year, how much did he invest at each rate.
shanes neighbor pledged 1.25 for every 0.5 miles that shane swims in the charity swim-a-thon.if Shane swims 3 miles,how much money will his neighbor donate?
How do you write 1.075 in 2 other forms?
When 8.00x10^22 molecules of ammonia react with 7.00x10^22 molecules of oxygen according to the chemical equation shown below, how many grams of nitrogen gas ar
Why do you think the governments of the United States and other countries encouraged people on the home front to organized programs for such activities as scrap
Ho long does it take for the Moon to show all its faces? Thank you❤
if 120 marks is 60% what is full marks
