$mn\left(mn+n-2\right)^2$

$x^2-3x-180=0$

$\sin\left(8x\right)\cos\left(6x\right)-\cos\left(8x\right)\sin\left(6x\right)=\sin\left(2x\right)$

$\lim_{h\to0}\:\:\frac{\left(\left(4\sqrt{x+h}\right)-\left(4\sqrt{x}\right)\right)}{h}$

$42,35+42,35+46,60+12,04+228,69+14,90+42,83+46,60+45,92+46,60+46,60+46,60+279,99+228,69+6,05+51+61,59+60,50+12,04+29,70+19,99+50+3,91$

$6a^2-7a$

$\lim_{x\to\infty}\left(\frac{\left(x^2-2x+1\right)}{e^{-4x}}\right)$