Factorise: $x^{2} + 11 x + 24$

(x + 6) (x + 4)

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(x + 12) (x - 1)

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(x + 12) (x + 2)

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(x + 8) (x + 3)

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Solution

The correct option is D $(x + 8) (x + 3)$
$x^{2} + 11 x + 24$
$= x^{2} + 8 x + 3 x + 24$
$= x (x + 8) + 3 (x + 8)$
$= (x + 8) (x + 3)$

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(ii)

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(iii)

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(iv)

3 x^{2} - x - 4

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Choose the correct answer in the given question.
$\int \sqrt{x^{2} - 8 x + 7} d x$ is equal to
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;

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Factorise: x2+11x+24

The correct option is D (x+8)(x+3)x2+11x+24=x2+8x+3x+24=x(x+8)+3(x+8)=(x+8)(x+3)

Factorise: $x^{2} + 11 x + 24$

The correct option is D $(x + 8) (x + 3)$
$x^{2} + 11 x + 24$
$= x^{2} + 8 x + 3 x + 24$
$= x (x + 8) + 3 (x + 8)$
$= (x + 8) (x + 3)$