Question

Solve

$3^x\times 3^2=81$.

• A. 0.000506
• B. -2
• C. 1
• D. -1

Answer 1

The correct option is A 0.000506

Given

$3^x\times 3^2=81$.

$\Rightarrow$ $3^{x+2}=3^4$

SInce bases are equal, powers may also be equal.

$\Rightarrow x+2=4$

$\Rightarrow x=2$