$\int_8^{14}x\left(50x+2000\right)dx$
$4v+4=20$
$\int\frac{3x^2-25x+43}{\left(2x+1\right)\left(x-2\right)^2}dx$
$2x^2-3y+4w;\:x=2;\:y=-3$
$\frac{3x^3}{4+x^3}$
$\cos^4y-2\cos^2y+1$
$196a^{10}-289b^{12}$
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