The expression (5x+3x+4)+(x^2-6x+3) is equal to 7x^2-3x+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 (5x+3x+4)+(2x^2-6x+3) .
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= 7x^2-3x+7
Hence the expression becomes 7x^2-3x+7