Question

Which of the following correctly factors the expression −20x+4y−2?

Answer 1

9514 1404 393

Answer:

  B  2(−10x+2y−1)

Step-by-step explanation:

The greatest common factor is 2. Factoring that out gives the factorization shown in choice B.

  2(-10x +2y -1)

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You could factor out -2. Doing that would give ...

  -2(10x -2y +1) . . . . . . . doesn't match choice C