Question

find the value of 1/3-²​

Answer 1

I recommend you to see the attachment

Answer 2

Answer:

Required value is 9.

Step-by-step explanation:

Given,${ \frac{1}{3} }^{ - 2}$

This is a problem of Power of indices of Algebra.

By simple power indices rule,we can solve this problem.

$( \frac{1}{3} )^{ - 2} \\ =( \frac{3}{1} )^{ 2} \\ = \frac{ {3}^{2} }{ {1}^{2} } \\ = \frac{3 \times 3}{1 \times 1} \\ = \frac{9}{1} \\ = 9$

This is a problem of Algebra.

Some important Algebra formulas.

(a + b)² = a² + 2ab + b²

(a − b)² = a² − 2ab − b²

(a + b)³ = a³ + 3a²b + 3ab² + b³

(a - b)³ = a³ - 3a²b + 3ab² - b³

a³ + b³ = (a + b)³ − 3ab(a + b)

a³ - b³ = (a -b)³ + 3ab(a - b)

a² − b² = (a + b)(a − b)

a² + b² = (a + b)² − 2ab

a² + b² = (a − b)² + 2ab

a³ − b³ = (a − b)(a² + ab + b²)

a³ + b³ = (a + b)(a² − ab + b²)

Know more about Algebra,

1) https://brainly.in/question/13024124

2) https://brainly.in/question/1169549