$87j+21k-12j+23j+8k$
$6y''+y'-y=0$
$10+12i$
$\int\sqrt[4]{x}\:dx$
$\left(a^{x+1}+2\right)^2$
$-32\cdot24$
$-6\:x\:\left(-4\right)-\left(-9\right)$
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