Which of these correctly rearranges the terms in this polynomial so like terms are next to each other

4 - 6x + 2x^2 - 4x + 6x^2

a. -2x^2 + 6x^2 - 6x - 4x + 4 + 2

b. 6x^2 - 2x^2 + 6x - 4x - 4 + 2

c. 6x^2 - 6x -2x^2 - 4x + 4 + 2

d. 6x^2 - 6x - 4x + 4 + 2x^2 + 2

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?