Division and Factorisation of Polynomials (VCE SSCE Mathematical Methods): Quizzes

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Division and Factorisation of Polynomials
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In P(x)=D(x)Q(x)+R(x)P(x) = D(x)Q(x) + R(x), what is Q(x)Q(x) called?

The quotient

What constraint applies to remainder R(x)R(x) in polynomial division?

Degree less than divisor or zero

What is the remainder when P(x)P(x) is divided by x5x - 5?

P(5)P(5)

If P(3)=0P(3) = 0, what can we conclude?

x3x - 3 is a factor of P(x)P(x)

What is the factorisation of x3+a3x^3 + a^3?

(x+a)(x2ax+a2)(x + a)(x^2 - ax + a^2)

What is the factorisation of x3a3x^3 - a^3?

(xa)(x2+ax+a2)(x - a)(x^2 + ax + a^2)

Find remainder when P(x)P(x) is divided by 2x+12x + 1.

P(12)P(-\frac{1}{2})

If αβ-\frac{\alpha}{\beta} is a rational root of P(x)P(x), what divides the leading coefficient?

β\beta

How should 2x35x+12x^3 - 5x + 1 be written for long division?

2x3+0x25x+12x^3 + 0x^2 - 5x + 1

What is the quotient when x3+x214x24x^3 + x^2 - 14x - 24 is divided by x+2x + 2?

x2x12x^2 - x - 12

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