jahnoibenjamin
07.07.2019 •
Mathematics
Select all the expressions that are equivalent to the polynomial below. (4x+-1)a (-16x2 + 10x - 3) + (4x2 - 29x - 2)b 3(x - 5) - 2(6x2 + 9x + 5)c 2(x - 1) - 3(4x2 + 7x + 1)d (2x2 - 11x - 9) - (14x2 + 8x - 4)e (-15x2 + 9x - 10) + (3x2 - 10x - 5)f (4x2 - 13x - 7) - (16x2 + 9x - 5)
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Ответ:
Options A,C and D
Step-by-step explanation:
(4x+5)(-3x-1) = -12x²-19x-5
Option A:
(-16x² + 10x - 3) + (4x² - 29x - 2) = -12x²-19x-5
Option A is correct.
Option B:
3(x - 5) - 2(6x² + 9x + 5) = -12x²-15x-25
Option B is wrong.
Option C:
2(x - 1) - 3(4x² + 7x + 1) = -12x²-19x-5
Option C is correct.
Option D:
(2x² - 11x - 9) - (14x² + 8x - 4) = -12x²-19x-5
Option D is correct.
Option E:
(-15x² + 9x - 10) + (3x² - 10x - 5) = -12x²-x-15
Option E is wrong.
Option F:
(4x² - 13x - 7) - (16x² + 9x - 5) = -12x²-22x-2
Option F is wrong.
Ответ:
Ah Brainy Moderators do that..