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Factorise the expressions and divide them as directed.

(i) (5p2 − 25p + 20) ÷ (p − 1)

(ii) 4yz(z2 + 6z − 16) ÷ 2y(z + 8)

1 Answer

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Best answer

(i) 5p2 − 25p + 20 = 5(p2 − 5p + 4)

= 5[p2 − p − 4p + 4]

= 5[p(p −1) − 4(p −1)]

= 5(p −1) (p − 4)

(ii) 4yz(z2 + 6z −16) = 4yz [z2 − 2z + 8z − 16]

= 4yz [z(z − 2) + 8(z − 2)]

= 4yz(z − 2) (z + 8)

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