Question

2^(a+b) = 4 x 8 x 16, then (a + b)² = ?

• A. 9
• B. 81
• C. 2
• D. 16

Answer 1

Answer:

B. 81

2^(a+b) =4 x 8 x 16 = 2^2 x 2^3 x 2^4 =2^(2+3+4) =2^9 2^(a+b) = 2^9 (a+b)=9 (a+b)² = 9²=81