Transcription of 11.Remainder and Factor Theorem (A)
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11.Remainder and Factor Theorem (A)
: THE remainder AND Factor Theorem Solving and simplifying polynomials In our study of quadratics, one of the methods used to simplify and solve was factorisation. For example, we may solve for x in the following equation as follows: Hence, x = 3 or 2 are solutions or roots of the quadratic equation. A more general name for a quadratic is a polynomial of degree 2, since the highest power of the unknown is two. The method of factorisation worked for quadratics whose solutions are integers or rational numbers. For a polynomial of order 3, such as the method of factorisation may also be applied.
The Remainder Theorem If is any polynomial and is divided by then the remainder is . If = 0, then is a factor of . We apply the Remainder Theorem to obtain the remainder when %( ’) = 2 4 + 7’-+2’ 9 was divided by (2’ + 3). By the Remainder Theorem, the remainder is %A−4-B. %F− 3 2 G = 2(− 3 2)4 +7(− 3 2)-+2(− 3 2)+ 9 %F− 3 2 ...
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