$1-\sin^22x=4\cos^4-4\cos^2x+1$
$8\cdot3.1416$
$2\left(1-\sin^2\left(x\right)\right)$
$4+-13+-1+-8$
$\int\left(9x^3e^{4x}\right)dx$
$\left(a-b\right)^3\left(3x-4y\right)^3$
$\left(4a^2+5b^2\right)^2$
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