4√2 - 3√8 + 2√32 = 4√2 - 3√(4 * 2) + 2√(16 * 2) =
= 4√2 - 6√2 + 8√2 = √2 * (4 - 6 + 8) = 6√2
9x²+12x+4+16x²-1-5x+1=0
25x²+7x+4=0
D=49-400=-351<0
нет решения
1/3=0.(3)
2/3=0.(6)
1/9=0.(1)
2/9=0.(2)
5/9=0.(5)
7/9=0.(7)
1/7=0.(142857)
Y=x⁴-ax³-10x²+80x-96 (4;0)
4⁴-a*4³-10*4²+80*4-96=0
256-64a+320-96=0
64a=480
a=7,5