Question

Express the answer in standard form.​

Answer 1

`-2x^(2) +8x-10`

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:

`-(3x^(2) -5x+3) = -3x^(2) +5x-3`

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

`x^(2) +3x - 7 - 3x^(2) +5x-3 = -2x^(2) +8x-10`

So, our answer is:
`-2x^(2) +8x-10`

Answer 2

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