$-4m^2.-5mn^2c$
$x^2+3-70$
$\int sin3x\:sin2x\:dx$
$3\cos^2\left(x\right)-\cos\left(x\right)-2=0$
$\int\left(4x^2+5\right)^{\frac{1}{2}}\left(8x\right)dx$
$4x^2+8x-12=0$
$-\frac{40}{5}$
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