Question

Tìm a biết: 2^a + 2^a+9 = 1026

Answer 1

2^a + 2^a+9 = 1026

=> 2^a + 2^a . 2⁹ = 1026

=> 2^a (1 + 2⁹) = 1026

=> 2^a . 513 = 1026

=> 2^a = 1026 : 513

=> 2^a = 2 = 2¹

=> a = 1

Answer 2

2^a+2^a+9=1026

<=>2^a+2^a.2⁹=1027

=>2^a.(1+2⁹)=1026

=>2^a.513=1026

=>2^a=1026:513:2=2^1

=>a=1

Answer 3

Ta có 2^a + 2^{a + 9} = 1026

\(\Rightarrow\) 2^a.(1 + 2⁹) = 1026

\(\Rightarrow\) 2^a.513 = 1026

\(\Rightarrow\) 2^a = 2

\(\Rightarrow\) a = 1

Answer 4

a=1

2^a(1+2^9)=1026

2^a.513=1026

=> a=1