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 x−5x - 5?

P(5)P(5)

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

x−3x - 3 is a factor of P(x)P(x)

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

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

What is the factorisation of x3−a3x^3 - a^3?

(x−a)(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 2x3−5x+12x^3 - 5x + 1 be written for long division?

2x3+0x2−5x+12x^3 + 0x^2 - 5x + 1

What is the quotient when x3+x2−14x−24x^3 + x^2 - 14x - 24 is divided by x+2x + 2?

x2−x−12x^2 - x - 12

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