Divide the polynomial p(x) = x3 - 3x2 + 5x - 3 by the polynomial g(x) = x2 - 2. Find the quotient and remainder.
Solution:
Let p(x) and g(x) be any polynomial of degree greater than or equal to one.
Let p(x) = x3 - 3x2 + 5x - 3; g(x) = x2 - 2.
We will use the long division method to find the quotient and remainder of the polynomial p(x) when divided by g(x).
Divisibility Check:
Dividend = Divisor × quotient + remainder
x3 - 3x2 + 5x - 3 = (x2 - 2) × (x - 3) + (7x - 9)
x3 - 3x2 + 5x - 3 = (x3 - 3x2 - 2x + 6) + (7x - 9)
x3 - 3x2 + 5x - 3 = x3 - 3x2 + 5x - 3
LHS = RHS
Hence by using the long division method, the quotient and remainder of the polynomial p(x) = x3 - 3x2 + 5x - 3 when divided by the polynomial g(x) = x2 - 2 are x - 3 and 7x - 9 respectively.
Divide the polynomial p(x) = x³ - 3x² + 5x - 3 by the polynomial g(x) = x² - 2. Find the quotient and remainder.
Summary:
The quotient and remainder when x3 - 3x2 + 5x - 3 is divided by the polynomial g(x) = x2 - 2 are x - 3 and 7x - 9 respectively.
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