$1-\cos^2\left(4x\right)=sin\left(4x\right)^2$
$\left(2x^2-xy\right)^1$
$mn^2+a^3b^3-5x^2+6a^3b^4-11y^3-5x^2$
$1+y;\:x=7;\:y=10$
$\sec\left(2x+2y\right)$
$3x^2-11x$
$4x^2-96x-576$
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