reneekifer
reneekifer reneekifer
  • 05-04-2017
  • Mathematics
contestada

Fill in the blank for Remainder Therom


x 3 + x 2 - 21x - 45 = (x + 3)(x - 5)(x+?)

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apologiabiology
apologiabiology apologiabiology
  • 05-04-2017
not sure about remainder theorem but I'm sure that the last terms should all multiply tho the last term


see the expanded form is -45

so the last terms of each binomial should multiply to -45

3 times -5 times ?=-45
-15 times ?=-45
divide by -15
?=3

the question mark is 3
Answer Link
sherron06
sherron06 sherron06
  • 05-04-2017
(3x+2)(2x+5) , (x-3)(x-1), (2x-3)(5x+1), (3x-1)^2? (3x+2)(2x+5) ,
(x-3)(x-1),
(2x-3)(5x+1),
(3x-1)^2
Answer Link

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