$3y_{x+2}+y_{x+1}+4y_x=3^x$
$6x^3-25x^223x-6$
$\left(23\right)\left(24\right)\left(2\right)$
$\left(2\right)^2-2\left(2\right)+2$
$-47-6-8$
$4a^2b+3\left(-2a^2b\right)+8a^2b$
$tan\left(x\right)cox\left(x\right)csc\left(x\right)=1$
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