Răspunsuri

2014-10-01T19:41:59+03:00
A)x⁵*x₇=x⁵⁺⁷=x¹²
b)a⁷·a³ supra a²=a⁷⁺³⁻²=a⁸
d)a⁹b³ ori b⁸ supra a⁴  a⁹⁻⁴ ori b³⁺⁸=a⁵ ori b¹¹=a⁵b¹¹
c)(-4y)² ori (4y)³=4²y² ori 4³y³=4²⁺³ ori y²⁺³=4⁵ ori y⁵ =(4y)⁵