$125-729-256$
$\left(+100\right)\::\left(-20\right)\:x\:2$
$9z-3-10z+6$
$8t^3-27$
$428\cdot10$
$tan\left(\theta\right)=\frac{\sin\left(\theta\right)\sqrt{1-\sin^2\left(\theta\right)}}{1-\sin^2\left(\theta\right)}$
$\:x^2-10x=75$
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