Answer :

PunIntended

Answer:

[tex]-2x^{2} +8x-10[/tex]

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:

[tex]-(3x^{2} -5x+3) = -3x^{2} +5x-3[/tex]

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

[tex]x^{2} +3x - 7 - 3x^{2} +5x-3 = -2x^{2} +8x-10[/tex]

So, our answer is: [tex]-2x^{2} +8x-10[/tex]

devishri1977

Answer:

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    

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