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4.2*x+0*x^2+7 = 0;x
x
59.31-(x*(130-y))+0;72.49-((x+0.734)*((x*y+0.734*65)/(x+0.734)))+0
h^2-r^2+3^2;(7-h)^2-r^2+4^2
r^2-h^2+3^2;r^2-(7-h)^2+4^2
log(x)(cos(x))
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