Question

what is the value of k in the polynomial x cube + 3 x square minus k x minus 3 if X + 3 is a factor of the polynomial​

Answer 1

Answer:

let,x+3 =0

x=-3

so by putting the value of x in x³+3x²-kx-3

• (-3)³+3×(-3)²-k×(-3)-3=0
• -27+27+3k-3=0
• 3k-3=0
• 3k=3
• k=3/3
• k=1