Math, asked by madhumita36, 1 year ago

whatwhat number must be subtracted from 2 x square - 5 x so that the resulting polynomial leaves the remainder 2 when divided by 2 X + 1 ​

Answers

Answered by amitnrw
54

Answer:

1

Step-by-step explanation:

Let say   k must be subtracted from 2x² - 5x

so resulting Polynomial P(x) = 2x² - 5x - k

Remainder = 2 when divided by 2X +1

=> X = -1/2

P(-1/2) = 2

=> 2(-1/2)² - 5(-1/2) - k  = 2

=> 1/2 + 5/2 - k = 2

=> 3 - k = 2

=> 1 = k

so 1 must be subtracted from 2x² - 5x

Answered by poojakardam444
12

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