$\int3.6\left(90+2x\right)dx$
$\int ln\left(x^2+4\right)dx$
$-1+4+-6+3$
$1-\sin^2\left(a\right)=\sin\left(a\right)\cos\left(a\right)$
$3x+14>20-8x$
$5a^2-15ab-10ac$
$5\left(-2n-3\right)+2n$
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