georgebaseball
New member
- Joined
- Sep 4, 2006
- Messages
- 46
Today I had an exam and I wrote down the questions and the answers I provided so that you could please correct them.
1- using syntetic division determine whether x+2 is a factor of x^3-12x-16 , after applying syntethic division I concluded that yes x+2 it is a factor
2- Form a polynomial f(x) with real coheficients having the given degree and zeros.
zeros: -1,3i. degree 3
In this question I got as answer, x^3+x^2-9x-9.
3 use the intermediate value theorem to show that the given polynomial function has a zero in the given interval
4 Given c=1 is a zero of the polynomial F(x) = x^3+x^2-5x+3, factor f(x)
ok in this one i was totally lost, i just used syntetic division to prove that 1 effectively is a zero
5 Find the real zeros of 2x^3+3x^2+2x+3=0
and my answer were, -1 and -3/2
f(x) = X^4+8x^3-x^2+2 {-1,0} and I got F(-1) = -4
f(0)=2
4-find the zeros of (x^2-1)(1-x/2)
my answer was zeros 1,2
x intercept 0,2
please correct my answers
thank you so much.
1- using syntetic division determine whether x+2 is a factor of x^3-12x-16 , after applying syntethic division I concluded that yes x+2 it is a factor
2- Form a polynomial f(x) with real coheficients having the given degree and zeros.
zeros: -1,3i. degree 3
In this question I got as answer, x^3+x^2-9x-9.
3 use the intermediate value theorem to show that the given polynomial function has a zero in the given interval
4 Given c=1 is a zero of the polynomial F(x) = x^3+x^2-5x+3, factor f(x)
ok in this one i was totally lost, i just used syntetic division to prove that 1 effectively is a zero
5 Find the real zeros of 2x^3+3x^2+2x+3=0
and my answer were, -1 and -3/2
f(x) = X^4+8x^3-x^2+2 {-1,0} and I got F(-1) = -4
f(0)=2
4-find the zeros of (x^2-1)(1-x/2)
my answer was zeros 1,2
x intercept 0,2
please correct my answers
thank you so much.
