Factorize each of the following expressions:
$x^{2} - 9 a x + 18 a^{2}$

(x - 6 a) (x - 3 a)

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(x + 6 a) (x - 3 a)

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(x - 6 a) (x + 3 a)

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(x + 6 a) (x + 3 a)

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Solution

The correct option is C $(x - 6 a) (x - 3 a)$
$x^{2} - 9 a x + 18 a^{2} = x^{2} - 3 a x - 6 a x + 18 a^{2}$
$= x (x - 3 a) - 6 a (x - 3 a)$
$= (x - 3 a) (x - 6 a)$

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Similar questions

Solve for x and y:

$6 (a x + b y) = 3 a + 2 b, 6 (b x - a y) = 3 b - 2 a .$

6 (a x + b y) = 3 a + 2 b, 6 (b x - a y) = 3 b - 2 a .

6 (a x + b y) = 3 a + 2 b

6 (b x - a y) = 3 a - 2 b

6 (a x + b y) = 3 a + 2 b

6 (b x - a y) = 3 b - 2 a

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