Question

यदि x +kx + 12 का एक गुणनखण्ड (x+3) हो तोk
किसके बराबर है?​

Answer 1

p(x) = x+kx+12

x+3=0

=>x=-3

p(-3)= (-3)+k(-3)+12

=>-3-3k+12

=>-3+12-3k

=>9-3k

0=9-3k

=>9-3k=0

=>3k=9

=>k=9÷3

=>k=3

answer is k is equal to 3