Factorise this product 4x^(2)-y^(2)-6y-9?

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Factorise $f(x)=x^5-x$ into a product of irreducibles in $\mathbb Z_{5}[x]$ up vote 2 down vote favorite. 1. ... $x^4-4x^3+16x^2-64x+255$ with remainder $-1020$ - Read more

... [here the 20y has been split up into two numbers whose multiple is 36. 36 was chosen because this is the product ... 2. x² + 4x - 2x - 8 x(x + 4 ... factorise an ... - Read more

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Factorise this product 4x^(2)-y^(2)-6y-9? resources

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So x^2-4x-45 > 0. We factorise the left. x^2-9x+5x-45 > 0. x(x-9) +5(x-9) > 0. ... So for values of x < -5 makes both factors negative .So x< -5 makes the product ...

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