paulricar0 23/04/2022 1) a=a-3ba² =(a-3b)² a² = a² - 6ba - 3²b² a² = a² -6ba -9b² 2) x - y x^8 - y^4 x^4.x^4 - y^2 . y^2 (x . x)^4 - (y-y)² 3) x-2x+1 x^6 -2x^3 + 1 = x^3 . x^3 - 2^x3 + 1 = (x.x)^3 - 2^x3 + 1 = 0
paulricar0
1)
a=a-3b
a² =(a-3b)²
a² = a² - 6ba - 3²b²
a² = a² -6ba -9b²
2)
x - y
x^8 - y^4
x^4.x^4 - y^2 . y^2
(x . x)^4 - (y-y)²
3)
x-2x+1
x^6 -2x^3 + 1 =
x^3 . x^3 - 2^x3 + 1 =
(x.x)^3 - 2^x3 + 1 = 0