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Mathematics 16 Online
OpenStudy (anonymous):

http://assets.openstudy.com/updates/attachments/4e2dcf950b8b3d38d3bad209-messifan55-1311626806761-messi4.gif

OpenStudy (anonymous):

is it y + 2 1 ----- = ------ y y - 5 ???

OpenStudy (anonymous):

yes thats how it is

OpenStudy (anonymous):

y + 2 1 ----- = ------ y y - 5 cross multiply to get (y - 5)(y + 2) = 1*y y² - 5y + 2y - 10 = y y² - 3y - y - 10 = 0 y² - 4y - 10 = 0 so u get a quadratic equation... do u know how to solve this n get value of x ?????

OpenStudy (anonymous):

no i dont

OpenStudy (anonymous):

ok, i'll show u...

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

- b ± sqroot(b² - 4ac) y = ---------------------- 2a where a = coefficient of y² = 1 b = coefficient of y = -4 c = constant terms = - 10

OpenStudy (anonymous):

soo the answer is?

OpenStudy (anonymous):

so - (-4) ± sqroot[(-4)² - 4(1)(-10) 4 ± sqroot[16 + 40] 4 ± sqroot[56] y = ----------------------------- = -------------------- = ----------------- 2(1) 2 2 4 ± 2sqroot[14] 2 { 2 ± sqroot[14]} y = --------------- = ------------------ 2 2 y = 2 + sqroot[14] or 2 - sqroot[14]

OpenStudy (anonymous):

o.o

OpenStudy (anonymous):

if it is clear, pls click GOOD ANSWER button for me ☺☻☺

OpenStudy (anonymous):

is the answer 14? lol

OpenStudy (anonymous):

i gave you a medal but i dont have my answer -.-

OpenStudy (anonymous):

sorry I had to go to sleep and logged out before your post reached me.... Since it is a quadratic equation, you get two values of y y = 2 + sqroot[14] or y = 2 - sqroot[14]

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