$\left(2x+5\right)^2=4x^2+20x+25$
$4x^6-28x^3+49$
$\int\frac{2x+3}{2x+1}dx$
$\int\left(x^7\left(5+14x^8\right)^8\right)dx$
$3\left(-9q+9\right)+3\left(8q-3\right)$
$w=2z^3y\sin\left(x\right)$
$\ln\left(x^2-7\right)=\ln\left(4x-2\right)$
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