Question

Can you explain please how: (x - 4)(2a - b) + (x + 4)(2a - b)
became: =(2a - b) [(x - 4) + (x + 4)]
=(2a - b)(x - 4 + x + 4)=(2a - b)(2x)=2x(2a - b)

Answer 1

Answer:

Step-by-step explanation:

(x-4)(2a-b)+(x+4)(2a-b)

(2a-b)[(x-4)+(x+4)] (we can common 2a-b)

(2a-b)(x-4+x+4)

(2a-b)(2x)

2x(2a-b)