Question

Solve: (3x^4 − 3x) − (3x − 3x^4 )?

a
6x^4
b
6x^4 + 6x
c
6x^4 - 6
d
6x^4 - 6x

Answer 1

Option D is the correct answer

Step-by-step explanation:

$(3 {x}^{4} - 3x) - (3x - 3 {x}^{4} ) \\ \\ = 3 {x}^{4} - 3x - 3x + 3 {x}^{4} \\ \\ = 3 {x}^{4} + 3 {x}^{4} - 3x - 3x \\ \\ \huge \red{= 6 {x}^{4} - 6x }$

Answer 2

Answer:

D. $6x^{4} -6x$

Solution:

$(3x^{4} -3x) -(3x -3x^{4}) \\ 3x^{4} -3x -3x +3x^{4} \\ (3 + 3)x^{4} +(-3 -3)x \\ 6x^{4} -6x$