X2-a-b x- ab can be factorised asA- x-ax-bB- x-ax-bC- x-ax-bD- x-ax-b

The correct option is B (x + a) (x + b) x2 + (a + b)x + ab = x2 + ax + bx + ab = x(x + a) + b(x + a) = (x + a) (x + b) ...

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Factorisation by Grouping Terms

x2+a+b x+ ab ...

Question

x² + (a + b)x + ab can be factorised as ______ .

(x - a) (x + b)

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(x + a) (x + b)

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(x - a) (x - b)

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(x + a) (x - b)

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∣ ∣ ∣ ∣ ∣ \begin{matrix} a^{2} + x^{2} & a b - c x & a c + b x a b + c x & b^{2} + x^{2} & b c - a x a c - b x & b c + a x & c^{2} + x^{2} \end{matrix} ∣ ∣ ∣ ∣ ∣ =

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