A) (3x² - y²)²=9x⁴ - 6x²y² + y⁴
б) (-4a³ + 0.5b)² = (0.5b² - 4a³)² = 0.25b⁴ - 4a³b² ²+ 16a⁶
(x+5)(x² - 5x+25)=x³ + 5³ = x³ + 125
(3x+4)(9x²-12x+16)-64-3(3x-1)(3x+1)+x²=
=(3x)³ + 4³ - 64 - 3(9x² - 1) +x² =
= 27x³ + 64 - 64 - 27x² +3 +x² =
= 27x³ - 26x² + 3 =
= 27*1³ - 26*1² + 3 = 27-26+3=4