Question

СРОЧНО!!!!!!!!!Даю 25балів!!!!!​

Answer 1

Ответ:

a) -54а¹⁵b¹⁵, b) -x⁸y²⁷, c) 5x⁷y⁹

Объяснение:
a)2a³(-3a⁴b⁵)³ = 2a³(-(3a⁴b⁵)³) = -2a³×27a¹²b¹⁵ = -54а¹⁵b¹⁵

б) (-x⁶y⁷)(-xy¹⁰)² = (-x⁶y⁷)(xy¹⁰)² = -x⁶y⁷x²y²⁰ = -x⁸y²⁷

в) 1(4/5)xy(-1(2/3)x³y⁴)² = (9/5)xy(1(2/3)x³y⁴)² = (9/5)xy((5/3)x³y⁴)² =
(9/5)xy*(25/9)x⁶y⁸ = xy*5x⁶y⁸ = 5x⁷y⁹