Respuesta :
So you have:
(5x^2 + 3x + 4) + (2x^2 - 6x + 3)
You then distribute (you need to distribute in order to get rid of the parentheses)
1(5x^2 + 3x + 4) + 1(2x^2 - 6x + 3)
When you multiply 1 by any number, it will give you the same number.
Now you group:
5x^2 + 2x^2 = 7x^2 (x^2 terms)
3x - 6x = -3x (x-terms)
4 + 3 = 7 (constants)
And now write them in order:
7^2 - 3x + 7
And the answer is: The last one (D)
(5x^2 + 3x + 4) + (2x^2 - 6x + 3)
You then distribute (you need to distribute in order to get rid of the parentheses)
1(5x^2 + 3x + 4) + 1(2x^2 - 6x + 3)
When you multiply 1 by any number, it will give you the same number.
Now you group:
5x^2 + 2x^2 = 7x^2 (x^2 terms)
3x - 6x = -3x (x-terms)
4 + 3 = 7 (constants)
And now write them in order:
7^2 - 3x + 7
And the answer is: The last one (D)
The expression [tex](5x^{2} +3x+4)+(2x^{2} -6x+3)[/tex] is equal to 7[tex]x^{2}[/tex]-3x+7 which is option 4.
What is expression?
An expression is a combination of numbers, symbols and variables and coefficients but not in equal to form.
How to simplify an expression?
The expression which is given as [tex](5x^{2} +3x+4)+(2x^{2} -6x+3)[/tex].
We have to add the coefficients of the variables having same power.
So 5 and 2 are added, 3 and -6 are added and 4 and 3 are added.
The expression becomes=[tex]7x^{2} -3x+7[/tex].
Hence the expression becomes [tex]7x^{2} -3x+7[/tex].
Learn more about expressions at https://brainly.com/question/723406
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