$-1^3\left(2\right)-\frac{3}{5}\left(2\right)^2\left(5\right)+\frac{1}{2}\left(1\right)^2\left(2\right)\left(5\right)-\left(-1\right)\left(5\right)^2$

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

$\left(-a^{\frac{1}{3}}b^{\frac{5}{2}}c^3\right)^4$

$\int_{10}^{15}\left(0.02e^{-0.02x}\right)dx$

$49x^4y^2-64w^{10}z^{14}$

$6x^2-8^2$

$-90+-90$