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(3/4)*a^2*b-((2/5)*a^2*b)+(2/3)*a^2*v = 0
(3/4)*a^2*b+(-2/5)*a^2*b+(2/3)*a^2*v = 0
7/20*a^2*b+2/3*a^2*v = 0
x naleu017Cy do R
x in (-oo:+oo)
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