$t^2+14t=-39$
$\left(7a^4bc^3\right)\left(7a^4bc^3+cd^5\right)$
$\int\left(\frac{sin\left(25x\right)}{1+\cos^2\left(25x\right)}\right)dx$
$x^2\:+\:5x\:+\:2$
$-4x^2-4x+2$
$3x-4y+x+7y+z$
$\left(2a+c+3b\right)-\left(7a+4b-8c\right)$
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