Question

find the value of? please solved the question ​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

$\bold{\underline{underline{Question:-}}}$

$( - \frac{1}{5}) {}^{3} \times ( - 1) {}^{85} \times ( \frac{2}{5} ) {}^{2}$

Now, before the solution let us have a knowledge about various important things-

If a negative number is raised to the power of any even number, then the result always comes in positive.

If a negative number is raised to the power of any odd number, then the result always comes in negative.

$\bold{\underline{underline{Solution:-}}}$

$= ( - \frac{1}{5} ) {}^{3 } \times ( - 1) {}^{85} \times ( \frac{2}{5} ) {}^{2} \\ = \frac{ (- 1) \times ( - 1) \times ( - 1)}{( - 5) \times ( - 5) \times ( - 5)} \times ( - 1) \times \frac{2\times 2}{5 \times 5} \\ = \frac{ - 1}{ - 125} \times ( - 1) \times \frac{4}{25} \\ = \frac{( - 1) \times ( - 1) \times 4}{( - 125) \times 25} \\ = \frac{1 \times 4}{( - 125) \times 25} \\ = \frac{4}{( - 3125)} \\ = - \frac{4}{3125}$

$\bold{\red{\boxed{Answer:-4/3125}}}$