125b⁹-9b³+27b²+9b+1
y³+21y²+147y+343+y³-21y²+147y-343=2y³+294y
x³-3x²+9x+3x²-9x+27-x³+16x=91
16x=64
X=4
125b⁹-9b³+27b²+9b+1
y³+21y²+147y+343+y³-21y²+147y-343=2y³+294y
x³-3x²+9x+3x²-9x+27-x³+16x=91
16x=64
X=4