Вправи: 219

219. Подайте у вигляді степеня добуток:

1) m5m4 = m5+4 = m9;3) a3a3 = a3+3 = a6;5) y3y5y9 = y3+5+9 = y17;

2) xx7 = x1+7 = x8;4) 6863 = 68+3 = 611;6) c8c9c = c8+9+1 = c18;

7) (b – c)¹⁰ (b – c)⁶ = (b – c)¹⁰⁺⁶ = (b – c)¹⁶;

8) 112 ∙ 114 ∙ 116 = 112+4+6 = 1112;

9) x4x11x2 = x4+1+11+2 = x18;

10) (ab)⁵(ab)¹⁵ = (ab)⁵⁺¹⁵ = (ab)²⁰;

11) (2x + 3y)⁶(2x + 3y)¹⁴ = (2x + 3y)⁶⁺¹⁴ = (2x + 3y)²⁰;

12) (–xy)²(–xy)⁷(–xy)⁹ = (–xy)²⁺⁷⁺⁹ = (–xy)¹⁸.