$$5\left(2\right)^2-2\left(5\cdot3\right)-3\left(1\right)$$

$$xln\left(x^2+1\right)-2\left(x-\arcsin\left(x\right)\right)$$

$$10\sin\left(x\right)^2=3\cos\left(x\right)^2$$

$$15.25x+150=1431$$

$$\frac{\sin\left(x\right)-\cos\left(x\right)+1}{\sin\:\left(x\right)+\cos\left(x\right)-1}=\sec\left(x\right)+\tan\left(x\right)$$

$$\left(y^2-1\right)dx=cscxdy$$

$$12r\:+8\:+12$$