$x=\sqrt{x^2-10x+25}$

$\left(-8\right)\left(+6\right)-\frac{\left(-75\right)}{\left(+5\right)}$

$\int\left(x-\left(-xe^{-150x}-e^{-150x}\right)\right)\left(150e^{-150x}\right)dx$

$\left(7^{a^2}-b\right)\left(3^a-2b\right)$

$-\left(-1^2\right)+2\left(1\right)+3$

$\left(x-1\right)+\left(4-x\right)$

$84m^2x-501m^2x-604m^2x-715$