Q. The polynomial p(x)=x3−6x2+32 has a known factor of (x−4).Rewrite p(x) as a product of linear factors.p(x)=□
Factor Out Known Factor: Factor out the known factor from the polynomial.Since we know that (x−4) is a factor of p(x), we can perform polynomial division or use synthetic division to divide p(x) by (x−4) to find the other factors.
Perform Synthetic Division: Perform the synthetic division using the known factor (x−4). We set up the synthetic division with the root of the known factor, which is 4, and the coefficients of p(x), which are 1, −6, and 32.4 | 1−6032 | 44243 -----------------145420The result of the synthetic division gives us the coefficients of the quotient polynomial: 48.
Factor Quotient Polynomial: Factor the quotient polynomial.The quotient polynomial is a quadratic, which we can factor further if possible. We look for two numbers that multiply to −8 and add up to −2. These numbers are −4 and 2.
Write Factored Form: Write the factored form of the quotient polynomial.The factored form of the quadratic is (x−4)(x+2). Therefore, we can write p(x) as the product of its factors:p(x)=(x−4)(x−4)(x+2).
Simplify Repeated Factor: Simplify the repeated factor.Since (x−4) is a factor that appears twice, we can write it as a squared term:p(x)=(x−4)2(x+2).
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