y212y23Solutiony212y23 y2 12 y 23 0 a1 b12 c23 use 1st sol

y2-12y=-23

y^2-12y=-23
y^2 - 12 y +23 = 0

a=1
b=-12
c=23
use:
1st solution :
y= {-b + sqrt (b^2-4*a*c)}/2a
= {- (-12) + sqrt ((-12)^2-4*1*23)}/2*1
= { 12 + sqrt (144 -92)}/2
= {12 + sqrt (52)}/2
= 9.6

2nd solution:
y= {-b - sqrt (b^2-4*a*c)}/2a
= {- (-12) - sqrt ((-12)^2-4*1*23)}/2*1
= { 12 - sqrt (144 -92)}/2
= {12 - sqrt (52)}/2
= 2.39

Answer:
y = 9.6,2.39

$y2-12y=-23Solutiony^2-12y=-23 y^2 - 12 y +23 = 0 a=1 b=-12 c=23 use: 1st solution : y= {-b + sqrt (b^2-4*a*c)}/2a = {- (-12) + sqrt ((-12)^2-4*1*23)}/2*1 = { 12$

y212y23Solutiony212y23 y2 12 y 23 0 a1 b12 c23 use 1st sol

Solution

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