$\frac{1}{5}k-\frac{2}{3}j\:and-\frac{2}{3}j+\frac{1}{5}k$

$\left(2x-1\right)\left(4x-3\right)=8$

$\:\left(x-5\right)\left(2x+3\right)$

$\left(-3+5-8\right)\cdot\left(-6+1\right)+\left|\left(-2+9-1\right)\cdot\left(-8+2\right)\right|$

$-2\cdot2\cdot2\cdot2\cdot2$

$3^{x^2+x-6}=1$

$\int\left(x\left(x-1\right)^4\right)dx$