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

$\left(7y-5x\right)\left(7y+\frac{3x}{2}\right)$

$\left(28\right)\left(-7\right)$

$\lim_{x\to\infty}\left(\frac{3e^x+\ln\left(x\right)}{e^x+x}\right)$

$\lim_{x\to\infty}\left(\ln x\right)e^{-x}$

$1-0.3$