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3 years ago

MARKIN BRAINIEST!!! GIVIN 30PTS!!!

Mathematics

2 answers:

Sedbober [7]3 years ago

7 0

Answer:

(-16x² +10x -3) +(4x² -29x -2)
(2x² -11x -9) -(14x² +8x -4)
2(x -1) -3(4x² +7x +1)

Step-by-step explanation:

I find it takes less work if I can eliminate obviously wrong answers. Toward that end, we can consider the constant terms only:

-3 +(-2) = -5 . . . . possible equivalent
-10 -5 = -15 . . . . NOT equivalent
3(-5) -2(5) = -25 . . . . NOT equivalent
-9 -(-4) = -5 . . . . possible equivalent
-7 -(-5) = -2 . . . . NOT equivalent
2(-1) -3(1) = -5 . . possible equivalent

Now, we can go back and check the other terms in the candidate expressions we have identified.

1. (-16x² +10x -3) +(4x² -29x -2) = (-16+4)x² +(10-29)x -5 = -12x² -19x -5 . . . OK

4. (2x² -11x -9) -(14x² +8x -4) = (2-14)x² +(-11-8)x -5 = -12x² -19x -5 . . . OK

6. 2(x -1) -3(4x² +7x +1) = -12x² +(2 -3·7)x -5 = -12x² -19x -5 . . . OK

All three of the "possible equivalent" expressions we identified on the first pass are fully equivalent to the target expression. These are your answer choices.

antoniya [11.8K]3 years ago

5 0

Answer:

2 and 3

Step-by-step explanation:

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