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mark177
30.08.2019 •
Mathematics
Multiply the following polynomials, then place the answer in the proper location on the grid. write the answer in descending powers of a.(4x^2 - 10x -24) (2x + 3)
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Ответ:
2(2x + 3)(2x + 3)(x - 4)
2(2x + 3)(x - 4)(2x + 3)
2(2x + 3)(x(2x + 3) - 4(2x + 3))
2(2x + 3)(x(2x) + x(3) - 4(2x) + 4(3))
2(2x + 3)(2x² + 3x - 8x + 12)
2(2x + 3)(2x² - 5x - 12)
(2x + 3)(2(2x² - 5x - 12))
(2x + 3)(2(2x²) - 2(5x) - 2(12))
(2x + 3)(4x² - 10x - 24)
2x(4x² - 10x - 24) + 3(4x² - 10x - 24)
2x(4x²) - 2x(10x) - 2x(24) + 3(4x²) - 3(10x) - 3(24)
8x³ - 20x² - 48x + 12x² - 30x - 72
8x³ - 20x² + 12x² - 48x - 30x - 72
8x³ - 8x² - 78x - 72
Ответ:
Its the 2nd one