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(x ➖ 2x+1 ).
{3x^3+15x^3}= 18x^6 {27x^3+39x^3}= 63x^6 {18x^6+63x^6}=81 x^12 51x^3 {81x^12+51x^3}= 132x^15 10^10^4^8x^3^5 2^52^54^2^3x^3^5 1^1^12^21^1x3^1 2^2x^3^1 1^2x3^1 2x^3 (x ➖ 3x+2)
x + 9 = u => x = u - 9(u - 8)³ + (u - 4)³ + u³ + (u + 4)³ + (u + 8)³ = 10³u³ + 2(u³ + 3u8²) + 2(u³ + 3u4²) = 10³5u³ + 480u - 1000 = 0u³ + 96u - 200 = 0u³ - 8 + 96(u - 2) = 0(u - 2)(u² + 2u + 100) = 0u - 2 = 0 => u = 2 => *x = -7*-6³ + -2³ + 2³ + 6³ + 10³ = 10³
(x ➖ 2x+1 ).
{3x^3+15x^3}= 18x^6 {27x^3+39x^3}= 63x^6 {18x^6+63x^6}=81 x^12 51x^3 {81x^12+51x^3}= 132x^15 10^10^4^8x^3^5 2^52^54^2^3x^3^5 1^1^12^21^1x3^1 2^2x^3^1 1^2x3^1 2x^3 (x ➖ 3x+2)
x + 9 = u => x = u - 9
(u - 8)³ + (u - 4)³ + u³ + (u + 4)³ + (u + 8)³ = 10³
u³ + 2(u³ + 3u8²) + 2(u³ + 3u4²) = 10³
5u³ + 480u - 1000 = 0
u³ + 96u - 200 = 0
u³ - 8 + 96(u - 2) = 0
(u - 2)(u² + 2u + 100) = 0
u - 2 = 0 => u = 2 => *x = -7*
-6³ + -2³ + 2³ + 6³ + 10³ = 10³