$14ab^2-89a^2+14b^4+89a^2-36a^4$
$\frac{4x^2+6x+1}{2x-1}$
$10.2-15+4-7+8+3$
$\frac{8\sqrt{3}}{2}$
$7x=147$
$2\left(x\:+\:1\right)\:=\:11\:-\:x$
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