5/7a^2-1/2a-2/11a^2-7a

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Solution for 5/7a^2-1/2a-2/11a^2-7a equation: 


a in (-oo:+oo)

(5/7)*a^2-((2/11)*a^2)-((1/2)*a)-(7*a) = 0

(5/7)*a^2+(-2/11)*a^2+(-1/2)*a-7*a = 0

41/77*a^2-15/2*a = 0

DELTA = (-15/2)^2-(0*41/77*4)

DELTA = 225/4

DELTA > 0

a = ((225/4)^(1/2)+15/2)/(41/77*2) or a = (15/2-(225/4)^(1/2))/(41/77*2)

a = 1155/82 or a = 0

a in { 0, 1155/82 }

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