$3x-7x-24$

$tan\left(x-45\right)tan\left(x+45\right)=-1$

$\frac{\left(3y^3\right)\left(2y^2\right)}{\left(y^4\right)^3}.\left(y^3\right)$

$\cos2x+2\sin^2x-1=0$

$-4\left(-6\right)\cdot\left(5-13\right)$

$\log\left(x\right)=\log\left(2x^2-2\right)$

$\lim_{x\to-\infty}\left(1-e^{\left(x-1\right)}\right)$