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Question

What should be added to x2+3x−8 to get x2+x+6?


A

3x2 - 8

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B

- 2x + 14

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C

x + 6

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D

2x + 14

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Solution

The correct option is B

- 2x + 14


Here we have to subtract
(x2 + 3x - 8) from (x2 + x + 6),
So, we have to find the solution of
(x2 + x + 6) - (x2 + 3x - 8).

(x2+x+6)
(x2+3x8)
() () (+)––––––––––––
0x22x+14

So, (- 2x + 14) should be added to (x2 + 3x - 8) to get (x2 + x + 6).


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