$49\cdot28$
$\left(x^2-5\right)\left(x^2+7\right)-\:\left(x^2+3\right)^2$
$\int_0^{\pi45}x\:tan^2\:\left(15x\right)dx$
$y^2+5y-14$
$\frac{x^3+5x^3-10}{x+1}$
$-167+\left(-78\right)+\left(24\right)$
$\left(3a^7\right)^3$
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