Question

(viii) x^3 + 3x^2 - 7x - 6. factorise​

Answer 1

Answer:

${x}^{3} + 3 {x}^{2} - 7x - 6 \\ = > {x}^{3} - 2 {x}^{2} + 5 {x}^{2} - 10x + 3x - 6 \\ = > {x}^{2} (x - 2) + 5x(x - 2) + 3(x - 2) \\ = > (x - 2)( {x}^{2} + 5x + 3) \\ = > now \: the \: terms \: will \: not \: have \: the \: roots \: as \: integers \\ so \: we \: can \: stop \: this \: here$

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