$1283-\infty$

$cx\left(2x-1\right)\left(2x+5\right)$

$5^{9-\left(0\right)^2}$

$3^{2x}.2^x=20$

$\left[3\left(5\right)^2-4\left(5\right)-3\right]-\left[3\left(3.5\right)^2-4\left(3.5\right)-3\right]$

$\int\left(12x^{-4}-4x^{-3}+9x^{-1}+3\right)dx$

$a^2dx=xsqrt\left(x^2-a^2dy\right)$