$m^2\left(b+4d\right)-n\left(b+3d\right)$
$-1-32$
$3t^2+42t+147$
$\left(-1.625\right)^4-\left(-1.625\right)^2+2\left(-1.625\right)$
$\frac{12x^3+13x^2-59x-30}{4x-5}$
$\lim_{x\to-2}\frac{x^3+3x^2-4}{x^3+5x^2+8x+4}$
$f\left(-7\right)=4x^2-4x$
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