0,5с⁴*(3b³c)² = 0.5c⁴ * 3² b³*² c¹*² = (0.5 * 9) * b⁶ * c⁴⁺² = 4.5b⁶c⁶
7xy⁴ +x⁴y- 5xy⁴-3x⁴y = (7xy⁴ - 5xy⁴) +(x⁴y -3x⁴y)=2xy⁴ -2x⁴y
(7c-2dc) - (5c+4dc) = 7c - 2dc -5c -4dc =(7c - 5c) - (2cd+4cd) = 2c - 6cd
-4y²(y³+2xy-3x²) = -4y²⁺³ - 4y² * 2xy -4y² *(-3x²) = -4y⁵ -8xy³ +12x²y²
4m³n + 10m⁶n² -6m⁴n³ = 2m³n*(2 + 5m³n - 3mn²) =2m³n*(5m³n -3mn² + 2)