$\left(1+\cot x^2\right)\cos\left(x\right)$
$10-10\cdot60$
$\left(t-2\right)\left(t^2+2t+4\right)$
$9a^4\:-\:6a^2\:+\:9a$
$\left(\left(4m-3\right)+n\right)^2$
$b^2-4b+16$
$\left(-4x\right)\left(-x^2+y^2+5\right)$
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