$\left(6x^2+7y^5\right)^2-\left(6x^2-7y^5\right)^2$

$-72-712$

$\sqrt[3]{475-132}$

$\frac{\cos^2\left(\frac{\pi}{2}-x\right)}{\sqrt{1-\sin^2\left(x\right)}}$

$10m^3p^2-5m^6p^4$

$3^{\left(4\right)^{-1}}+\left(\frac{1}{3}\right)^{-\left(\frac{1}{3}\right)^{-2}}+3^{\left(-\frac{1}{2}\right)^{-2}}$

$1.52c+3.12c$