{"id":2484,"date":"2022-12-29T10:00:38","date_gmt":"2022-12-29T04:30:38","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=2484"},"modified":"2022-12-30T09:43:17","modified_gmt":"2022-12-30T04:13:17","slug":"factor-theorem","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/factor-theorem\/","title":{"rendered":"How Do You Use The Factor Theorem"},"content":{"rendered":"

Factor Theorem<\/strong><\/h2>\n

Theorem:<\/strong> If p(x) is a polynomial of degree n \u2265\u00a01 and a is any real number, then
\n(i) x \u2013 a is a factor of p(x), if p(a) = 0, and (ii) p(a) = 0, if x \u2013 a is a factor of p(x).
\nProof:<\/strong> By the Remainder Theorem,
\np(x) = (x \u2013 a) q(x) + p(a).
\n(i) If p(a) = 0, then p(x) = (x \u2013 a) q(x),
\nwhich shows that x \u2013 a is a factor of p(x).
\n(ii) Since x \u2013 a is a factor of p(x),
\np(x) = (x \u2013 a) g(x) for same polynomial g(x).
\nIn this case, p(a) = (a \u2013 a) g(a) = 0.<\/p>\n

To use factor theorem<\/strong><\/p>\n