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Factorisation by Common Factors

iii Factorise...

Question

Question 3(iii)
Factorise the expressions
$2 x^{3} + 2 x y^{2} + 2 x z^{2}$

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Solution

$2 x^{3} + 2 x y^{2} + 2 x z^{2} = 2 x (x^{2} + y^{2} + z^{2})$

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2 x^{3} + 2 x y^{2} + 2 x z^{2}

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Question 60 (a)

What should be subtracted from $2 x^{3} - 3 x^{2} y + 2 x y^{2} + 3 y^{3}$ to get $x^{3} - 2 x^{2} y + 3 x y^{2} + 4 y^{3} ?$

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