Question

ТОЛЬКО 2 ЗАДАНИЕ!!!!!!!!!!!!!!!!!!!!!!!!! СРОЧНО! !!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

1.Найдите значения выражения:

1) $frac{4x+y}{5x-4y}$ = $frac{4*(-4)+2}{5*(-4)-4*2}$ = $frac {-16+2}{-20-8}$ = $frac {-14}{-28}$   = $frac {1}{2}$  

2)$frac{a^{2}-4a}{7a-1}$ =$frac{0.2^{2}-4*0.2}{7*0.2-0.2}$  = $frac{0.04-0,8}{1.4-0.2}$ = $frac{-0.76}{1.2}$