задание 4

а)(3х-4)³=(3х)³-3*(3х)²*4+3*3х*4²-4³=27х³-3*9х*4+3*3х*16-64=27х³-108х²+144х-64

ә)(2а²+3б³)³=(2а²)²+3*(2а²)²*3б³+3*2а²*(3б³)²+(3б³)³=8а⁶+3*4а⁴*3б³+3*2а²*9б⁶+27б⁹=8а⁶+36а⁴б³+54а²б⁶+27б⁹