find the value of k if X+k is the factor of the polynomials: (1) x^3+kx^2-2x+k+5. (2)x^4-k^2x^2+3x-6k
Answers
Answered by
2
Answer:The answer is
k
=
−
11
Step-by-step explanation:
Let
f
(
x
)
=
x
3
−
6
x
2
+
k
x
+
10
If
(
x
+
2
)
is a factor
Then,
f
(
−
2
)
=
0
f
(
−
2
)
=
−
8
−
24
−
2
k
+
10
=
0
2
k
=
−
22
k
=
−
11
Answered by
2
Answer:
x=-k
I) x*3+kx*2-2x+k+5
-k*3+k(-k)*2-2(-k)+k+5
-3k-2ksquare+2k+k+5
-3k-2k2+3k+5
-2ksquare+5
Similar questions