$y=\left(-x\right)^2+2\cdot\left(-x\right)+1$

$\left(7x-5\right)\cdot\left(7x-8\right)$

$\frac{\cos\left(x\right)}{\sin\left(x\right)}x\sin\left(x\right)^5$

$2x^2-12x+18$

$x=lny'+siny'$

$5tan^2\left(x\right)+24tan\left(x\right)-36=0$

$\int\sin\left(7x\right)\cos\left(11x\right)dx$