(p+1)^2=4/9

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Solution for (p+1)^2=4/9 equation: 


p in (-oo:+oo)

(p+1)^2 = 4/9 // - 4/9

(p+1)^2-(4/9) = 0

(p+1)^2-4/9 = 0

(9*(p+1)^2)/9-4/9 = 0

9*(p+1)^2-4 = 0

9*p^2+18*p+5 = 0

9*p^2+18*p+5 = 0

9*p^2+18*p+5 = 0

DELTA = 18^2-(4*5*9)

DELTA = 144

DELTA > 0

p = (144^(1/2)-18)/(2*9) or p = (-144^(1/2)-18)/(2*9)

p = -1/3 or p = -5/3

(p+5/3)*(p+1/3) = 0

((p+5/3)*(p+1/3))/9 = 0

((p+5/3)*(p+1/3))/9 = 0 // * 9

(p+5/3)*(p+1/3) = 0

( p+1/3 )

p+1/3 = 0 // - 1/3

p = -1/3

( p+5/3 )

p+5/3 = 0 // - 5/3

p = -5/3

p in { -1/3, -5/3 }

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