The correct option is B 5y(x+3) 5xy+15y=( 5× x× y ) +( 5× 3× y ) #160; #160; #160; #160; #160; #160; #160; #160; #160; # ...

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Factorisation by Common Factors

Factorise: ...

Question

Factorise: $5 x y + 15 y$

5 y (x + 1)

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5 y (x + 3)

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5 y (x + y)

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5 y (x + 5)

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Solution

The correct option is B $5 y (x + 3)$
$5 x y + 15 y = (5 \times x \times y) + (5 \times 3 \times y)$

$= 5 y (x + 3)$

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