Math, asked by annu3695, 1 year ago

find the value of k if x = 1/2

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Answered by Anonymous
6
Hey !


x = 1/2


P ( x ) = 8x³ + kx² - 4x + 2



p (1/2) = 8 × (1/2)³ + k × (1/2)² - 4 × 1/2 + 2




=> 8 × 1/8 + k × 1/4 - 2 + 2 = 0




=> 1 + k/4 = 0



=> 4 + k = 0



=> K = -4

annu3695: is it correct
annu3695: are you sure
Answered by Anonymous
3
hiii!!!

here's ur answer...

given the value of x = 1/2

therefore on putting values :-

p ( 1/2 ) = 8 (1/2)³ + k (1/2)² - 4 (1/2) + 2 = 0

=> 8 ( 1/8 ) + k (1/4) - 2 + 2 = 0

=> 1 + k (1/4) = 0

=> k (1/4) = -1

=> k = -1/1 × 4/1

=> k = -4

hence, the value of k is -4

hope this helps..!!


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