$\left(5y-3x-1\right)\left(5y+3x-1\right)$
$cos^2\left(\frac{x}{2}\right)+sin^2\left(\frac{x}{2}\right)=cos\left(x\right)$
$\left(7a+5b\right)^2$
$x ^ { 2 } - 2 x - 4 \geq x ^ { 2 } - 3 x + 3$
$11\cdot\left(12-15-40\right)$
$\left(z^4+6\right)^5$
$60=10$
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