Factorise: $80 p^{2} - 72 p$

8 p (5 p - 9)

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16 p (5 p - 4)

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8 p (10 p - 8)

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8 p (10 p - 9)

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Solution

The correct option is D $8 p (10 p - 9)$
$80 p^{2} - 72 p = (8 \times 10 \times p \times p) - (8 \times 9 \times p)$

$= 8 p (10 p - 9)$

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