Fill in the blank for Remainder Therom

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

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Mathematics

12 January, 23:23

Fill in the blank for Remainder Therom

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

+4

Answers (2)

Know the Answer?

Elliot Kennedy · Answer 1

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

Craig Mann · Answer 2

(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

Fill in the blank for Remainder Theromx 3 + x 2 - 21x - 45 = (x + 3) (x - 5) (x+?)

Fill in the blank for Remainder Therom

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