Express the answer in standard form.

Step-by-step explanation:

Standard form is basically where the degrees of the terms are in descending order.

First, let's distribute the negative sign to the terms in the second parentheses:

Now, we can just combine like terms with the terms from the first parentheses:

So, our answer is:

Step-by-step explanation:

(x² + 3x - 7) - (3x² - 5x + 3)

Take (-) inside to remove the parenthesis

(x² + 3x - 7) - (3x² - 5x + 3) = x² + 3x - 7 - 3x² + 5x - 3

= x² - 3x² +3x + 5x -7 - 3   {bring the like terms together and do the arithmetic operation}

= -2x² + 8x - 10    

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation: