Asked by A GOODSTUDENT
Out of group of goats,Two times the square root of the number of goats were kept in shade, 1/4 of the number were taken for grazing and 15 were sold, find the initial no. Of goats?
Answers
Answered by
bobpursley
N=2sqrtN +.25N+15
change variables to ease tension
x=sqrtN
.75x^2 -2x-15=0
Ahhhhah! a quadratic equation.
x= (2+-sqrt(4+4*3/4*15))/1.5
x=(2+-sqrt(49))/1.5
x=9/1.5=6
x^2=N=36
change variables to ease tension
x=sqrtN
.75x^2 -2x-15=0
Ahhhhah! a quadratic equation.
x= (2+-sqrt(4+4*3/4*15))/1.5
x=(2+-sqrt(49))/1.5
x=9/1.5=6
x^2=N=36
Answered by
A GOODSTUDENT
Thanks
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