Expresii în limbajul Pascal

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(a+b)-2*a*b

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6*a*a+15*a*b-13*b*b, 6*sqr(a)+15*a*b-13*sqr(b)

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(a+b)*(a-b)

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2*a/(b+c), (2*a)/(b+c)

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sqr(a)+2/sqr(b), a*a+2/b*b, a*a+2/(b*b)

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15*sqrt(a/(a-b))

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sqrt(sqr(x)+5), sqrt(x*x+5)

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2*alfa*beta

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5*pi*r, 5*3.14*r

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cos(alfa-beta)+sin(alfa+beta)