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Question

Fill in the blanks.
(i) (5x2+20x)÷5x= _____________
(ii) (5x2+20x)÷(x+4)= ____________
[2 marks]

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Solution


We can write,
(5x2+20x)=(5x×x+4×5x)

(5x2+20x)=5x(x+4)

[1 mark]

So,
(5x2+20x)÷5x=(5x2+20x)5x=5x(x+4)5x=(x+4)

[0.5 mark]

(5x2+20x)÷(x+4)=(5x2+20x)(x+4)=5x(x+4)(x+4)=5x
[0.5 mark]

Therefore,
(i) (5x2+20x)÷5x=(x+4)
(ii) (5x2+20x)÷(x+4)=5x

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