Вправи: 449

449. Спрости вираз.

a) 6x^–2c • 1,5xc^–3 = 6c•1,5xx2c3 = 9xc2;

б) 1,6x^–1y^–5 • 58xy = 1,6•5xy8xy5 = 1y4;

в) 34a²n^–4 • 8a^–3n² = 34 • 8a^–1n^–2 = 6a^–1n^–2;

г) 6x-5a-6 • a36x-9 = x4a76;

ґ) 8x2z • z-316x-3 = x5z-22 = 0,5x⁵z^–2;

д) 14c-17x-8 • x7c-18 = 2cx⁹.