Question

3¹⁵ : 3

x⁷ . x⁶ : x¹³

y³⁰ : y⁶ . y

3³.17 - 3³ .8

5871:103-(147-82).2+1

3+5+7+9+...+113

 

Answer 1

3¹⁵:3= 3¹⁵: 3¹= 3^15-1=3¹⁴

x⁷.x⁶:x¹³= x^7+6-13=x⁰=1

y³⁰:y⁶.y=y^30-6+1=y²⁵

Answer 2

\(3^{15}:3=3^{15-1}=3^{14}\)

\(x^7.x^6:x^{13}=x^{7+6-13}=x^0=1\)

 \(y^{30}:y^6.y=y^{30-6+1}=y^{25}\)

\(3^3.17-3^3.8\)

\(=3^3.\left(17-8\right)\)

\(=3^3.9\)

\(=3^3.3^2\)

\(=3^5\)

Answer 3

3¹⁵  : 3 = 3^{15 - 1} = 3¹⁴

x⁷ . x⁶ :x¹³ = x⁷⁺⁶ :x¹³= x^13-13=x⁰=1

y³⁰ :y⁶.y=y^30-6+1=y25

5871:103-(147-82).2+1

=5871:103-65.2+1

=57-130+1

-72

3+5+7+9+....+113

Số số hang:113-3/2=55

Tổng của nó là:(113+3).55/2=3190