Find a polynomial with integer coefficients that satisfies the given conditions.P has degree 3 and zeros 5 and i.
Question
Find a polynomial with integer coefficients that satisfies the given conditions.P has degree 3 and zeros 5 and i.
Solution
To find a polynomial with integer coefficients that satisfies the given conditions, we need to remember that complex roots always come in conjugate pairs. This means that if "i" is a root, then "-i" is also a root.
Step 1: Write down the roots The roots are 5, i, and -i.
Step 2: Write down the factors The factors of the polynomial are (x-5), (x-i), and (x+i).
Step 3: Multiply the factors We multiply the factors to get the polynomial.
First, multiply the complex factors: (x - i)(x + i) = x^2 - i^2 = x^2 - (-1) = x^2 + 1
Then, multiply this result by the remaining factor: (x - 5)(x^2 + 1) = x^3 - 5x^2 + x - 5
So, the polynomial with degree 3 and zeros 5, i, and -i is P(x) = x^3 - 5x^2 + x - 5.
Similar Questions
Find a polynomial with integer coefficients that satisfies the given conditions.Q has degree 3, and zeros 0 and i.
Find the zero of the polynomials in each of the following cases.(i) p(x) = x+5
For what value of p, the equation (3p-1) x^2 + 5x + (2p-3) = 0Will have 0 as one of the roots. Also find other root.
A polynomial P is given.P(x) = x5 − 625x(a) Factor P into linear and irreducible quadratic factors with real coefficients.
The polynomial x3 + 2x2 – 5bx – 8 and x3 + bx2 – 12x – 11 when divided by (x – 2) and (x – 3)leave remainder p and q respectively. If –p + q = 10, find the value of b.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.