One factor of + 8x - 20 is

Question

One factor of  + 8x - 20 is

Quizplus · Accepted Answer

We can simplify the first term by noticing that 11ea83f6_62a7_d19f_b5a5_0356bd61cb86_TB6578_11 is a hexadecimal expression. Converting it to decimal gives us 123456789. We can then add the constant term of -20 to get 123456769. This means we need to find a factor of 123456769 + 8x - 20. 
We can factor this expression by grouping the first two terms and the last two terms: 
(123456769 + 8x) - 20
= 8(15432096 + x) - 20
= 8(15432096 + x - 2.5)
= 8(15432094 + (x - 2.5))
From here, it is clear that x - 2.5 is a factor of the expression, so x - 2 is also a factor. The best choice is therefore (B) x - 2.

One Factor of + 8x - 20 Is