$3\left(1-cos\left(x\right)\right)=sin^2\left(x\right)$

$49m^2+14+1$

$\left(\sqrt{k^2+1}\right)\left(\sqrt{26}\right)$

$\left(e^{2x}+4\right)y'=y$

$\frac{sin4t}{2}=2\left(sin\left(t\right)cos\left(t\right)-2sin^3\left(t\right)cos\left(t\right)\right)$

$\sqrt{12^2+5^2}$

$\int\frac{x\left(x^2-3\right)}{\left(e^{2x-1}\right)}dx$