a)
-81c⁶ - 375d⁹ = -3 * (27c⁶ + 125d⁹) = -3 * (3с² - 5d³)(9с⁴ - 15с²d³ + 25d⁶),
d)
25 - (4m - 5)² = 25 - 16m² + 40m - 25 = (40m - 16m²) = 8m * (5 - 2m),
c)
18 - 60x + 50x² = 2 * (9 - 30х + 25х²) = 2 * (3 - 5х)²
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Готово!!Удачи:)))
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a)
-81c⁶ - 375d⁹ = -3 * (27c⁶ + 125d⁹) = -3 * (3с² - 5d³)(9с⁴ - 15с²d³ + 25d⁶),
d)
25 - (4m - 5)² = 25 - 16m² + 40m - 25 = (40m - 16m²) = 8m * (5 - 2m),
c)
18 - 60x + 50x² = 2 * (9 - 30х + 25х²) = 2 * (3 - 5х)²
_____________________
Готово!!Удачи:)))
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