Question

Find x.

Pls help me find the answer. I'm not getting it right.​

Answer 1

Answer:

X = - 1

Step-by-step explanation:

${( \frac{2}{5}) }^{3} \times {( \frac{2}{5}) }^{ - 6} = {( \frac{2}{5}) }^{2x - 1} \\ \\ \\ { \frac{2}{5} }^{3 - 6} = { \frac{2}{5} }^{2x - 1} \\ \\ \\ { \frac{2}{5} }^{ - 3} = { \frac{2}{5} }^{2x - 1} \\ \\ \\ - 3 = 2x - 1 \\ \\ \\ 2x = - 2 \\ \\ \\ x = - 1$

Answer 2

Answer:

(2/5)^3+(-6)=(2/5)^2x-1

(2/5)^-3=(2/5)^2x-1

comparing both sides

-3=2x-1

-3+1=2x

-2=2x

-2/2=x

-1=x

hope it will help you