Question

Use the rational zeros theorem to find all the real zeros of the polynomial function. Use the zeros to factor over the real numbers f(x) = x + 3x - 13x - 15 Find the real zeros of Select the correct choice below and if necessary, fill in the answer box to complete your answer OAX= (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any rational numbers in the expression. Use a comma to separate answers a OB. There are no real zeros Use the real zeros to factor f. (Simplify your answer. Type your answer in factored form. Type an exact answer using radicals as needed. Use integers or fractions for any rational numbers in the expression)

Answer 1

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*=> Here, f(x) = x² + 3x130-15 Now, The factors of the constant term -15 are I1, +3, +5, +15 factors of the leading co-efficient 1 Ranna the are +1 - so, the possible rational roots are Il, 3, IS, I 15 Il New, -1,3,-5 salisfies f(x) = 0 . So, the real zeros off are A. x = (-1,3, -5] - using the zeros, f can be factored as f(W) = (2+1)(11-3)(4+5).