Question

Choose the correct simplification of (x9)2.

x11

x7

x81

x18

Answer 1

wHAT IS THE QUESTION?

Answer 2

\(\huge (x^m)^n= x^{mn}\)

Answer 3

\[(x^9)^2\]
this means
\[x^9 \cdot x^9\]
x^9 means x*x*x* x*x*x* x*x*x
and x^9 * x^9 = x*x*x* x*x*x* x*x*x* x*x*x* x*x*x* x*x*x
count the x's

Answer 4

of course, if you do that a few times, you will figure out that 2*9=18 is the faster way