Evaluate the expression 3-^2

Hi there! Your answer is

Evaluate means to substitute number values into an expression.

Let's do it step-by-step.

1. Break the exponent down into parts. 3² = 3 x 3

Ex: 3³= 3 x 3 x 3

2. Solve.

3 x 3 = 9 = 3²

Hence, your answer is 1/9.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.