$a^mx2a^4$
$23.51\cdot78.69$
$tan\left(\frac{3}{4}x\right)=1$
$t^2+2t-43=0$
$-3f-7f+2-8$
$\left(p-8\right).\left(p+8\right)$
$5x^2-5x-30$
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