Respuesta :

you need open parentheses ,do not change signs, because it is +, and add like terms
5x²-2x+6x-4=5x²+4x-4
correct answer is B

Answer:

Option B.

Step-by-step explanation:

The given expression is (5x² - 2x) + (6x - 4)

Now we we will add like terms

5x²+ (6x - 2x) - 4

= 5x² + 4x - 4

Therefore, final solution matches with option B.