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If X + 1 is a factor of ax cube + x square - 2 X + 4 x minus 4 a minus 9 find the value of a |
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Answer» The answer is 2 .Step-by-step explanation:Let, f(x) = ax³ + x² - 2x + 4A - 9Given (x + 1) is a factor of f(x), so f(-1) = 0F(x) = ax³ + x² - 2x + 4a - 9F(- 1) = a( - 1 )³ + (- 1 )² - 2 (- 1) + 4a - 90 = - 1A + 1 + 2 + 4a - 90 = - 1a + 4a + 1 + 2 - 90 = 3A + 3 - 90 = 3a - 6-3a = - 6a = 6/3a = 2Hence, the value of a is 2 .HOPE THIS ANSWER WILL HELP YOU... |
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