(х²-4х+3)/(х-3)²=((x-3)(x+1))/(х-3)²=(x+1)/<span>(х-3)</span>
Cos(-5π/3) + cos(π/3) + cos(π)+ cos(-π/4) = 1/2 + 1/2 - 1 + √2/2 = √2/2
О,Ваше задание решено!Ответ во вложении!!!
А) 5 - ( a - 3) = 5 - a + 3 = 8 - a
Б) 7 + ( 12 - 2b) = 7 + 12 - 2b = 19 - 2b
В) 64 - ( 14 - 7x) = 64 - 14 + 7x = 50 + 7x
Г) 38 + ( 12p - 8) = 38 + 12p - 8 = 30 + 12p = 6 ( 5 + 2p)
131*10⁷ = 1,31*10²*10⁷ = 1,31*10⁹