$4x^2+7x-2=0$
$y'=cos\left(2x-y+3\right)$
$\left(cos\left(x\right).tan\left(x\right)+1\right).\left(sin\left(x\right)-1\right)$
$25x^2-20x$
$5x^3+5x^3$
$\tan\left(63.4\right)$
$4^2.25^2$
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